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• XXIII.

  • No. 1. Dunlap’s Works, Ross Co. Ohio.

  • No. 2. Ancient Works, Athens Co. Ohio.

PLATE XXIII. No. 1.51 DUNLAP’S WORKS, ROSS COUNTY, OHIO.

This work, situated on the right bank of the Scioto river, six miles above Chillicothe, presents some remarkable features. It is rhomboidal in figure, with an avenue eleven hundred and thirty feet long extending to the south-east, and also a p064 short avenue, leading from a gateway to the north, connecting with a small circle. Along the western wall runs the bank of a plain, elevated a number of feet above the level of the work, upon the very brow of which is situated an outwork (A) eighty feet wide by two hundred and eighty in length. It overlooks the larger work, and has a wide gateway opening towards it. At this point the bank seems to have been graded to a more gentle descent. The great avenue approaches to within sixty feet of the gateway at a, which is one hundred and twenty feet wide; the walls closing, at the other extremity, upon a radius of half the width of the avenue. A low mound occupies the extreme point of the avenue. At some distance south of the main work, is a mound surrounded by a ditch and low embankment; and at the distance of about half a mile, very nearly in the course of the avenue, are a number of mounds,—one of which is fifteen feet high, truncated, and with a base of one hundred feet diameter. The diameter of the level area on the top is about fifty feet. These mounds stand on the lowest portion of the second terrace; the ground which they occupy being overflowed at periods of very high water in the river. These are the only monuments known which are reached by overflows. The top of the truncated mound was made a place of refuge, during the high water of 1832, by a family, with their cattle, horses, etc., numbering in all nearly a hundred. It was among the first opened, in the progress of these investigations, and before the characteristics of this class of works were clearly known. Hence, although a number of skeletons were disinterred, at depths of from two to five feet, together with a few rude instruments, the original deposit of the mound-builders was not reached. The skeletons were unquestionably those of the modern Indians. Upon the mound and around it, many fragments of rough pottery are found, and a number of entire vases of rude workmanship were exposed a few years since in ploughing over an adjacent small mound. Many decayed fresh-water shells are also found on and around the mound; and, as these when pulverized entered into the composition of the rude pottery of the more recent Indians, it seems highly probable that a sort of manufactory of this ware was established here. A number of large mounds also occur at some distance to the northward of the principal work.

PLATE XXIII. No. 2. ANCIENT WORKS, ATHENS COUNTY, OHIO.

Four miles north of the town of Athens, Athens county, Ohio, is a broad and level plain, upon which is situated a large group of ancient earthworks. The accompanying plan and description were furnished by S. P. HILDRETH, M. D., of Marietta, Ohio.52 p065

It has been suggested, that the work situated upon the detached portion of the plain above mentioned was designed for defence. There is nothing to favor the suggestion, except the fact of position, which is far from conclusive. On the other hand, the small size of the work, its form, and the occurrence of the ditch interior to the wall, may be taken to establish a different origin,—probably a religious one. p066

PLATE XXIV. ANCIENT WORKS, PIKE COUNTY, OHIO.

The plan so fully illustrates the character of this group of works, that little description is necessary. It consists principally of the constantly recurring figures, the square and the circle; the former measuring in this instance a little upwards of eight hundred feet upon each side, the latter ten hundred and fifty feet in diameter. They are connected by parallel walls, four hundred and seventy-five feet long, placed one hundred feet apart. These are intersected by a runway, which has here cut a passage in the terrace one hundred and twenty-five feet wide, by fifteen deep. This gully or ravine was undoubtedly in existence at the period of the construction of the works. The banks between the parallels appear to have an offset, as if they had been artificially graded; no further indications of a grade now exist.

Fig. 11.

The small works, in connection with the above, will attract special attention. The plan illustrates their forms, and the sections exhibit their dimensions. Nothing can surpass the symmetry of the small work A, of which an enlarged plan is herewith given, Fig. 11; B and C are also perfect figures of their kind. It will be remarked that we have here the square, the circle, and the ellipse, separate and in combination,—all of them constructed with geometric accuracy. The work D consists of a small circle, from which leads off a wall, extending along the brow of the terrace bank, until the latter turns, nearly at right angles, towards the north. It would seem that this line of embankment was constructed with specific reference to this natural feature. The fact, however, that a small circle, in the immediate vicinity, has been partially destroyed by the wasting of the bank, shows that it has receded since the construction of the works. The river now runs at a distance, although it is evident that it once washed the base of the terrace at this point. Its ancient bed is distinctly to be seen.

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XXIV. Ancient Work, Seal Township, Pike Co. Ohio.

The walls of the square coincide very nearly with the cardinal points of the compass, varying therefrom but three degrees. This is, however, an accidental coincidence; as all the ancient works seem to have been made to conform to the position of the ground which they occupy. There is no evidence that any regard was had to the points of the compass, except that the gateways or openings of the small circles are oftenest towards the east.

About one mile to the northward of this group is the unique work shown in the p067 supplementary plan N. Its walls are about four feet high, and its outlines beautifully distinct.53

It is impossible to resist the conviction that some significance attaches to these singular forms.

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XXV. Newark Works, Licking Co. Ohio.

PLATE XXV. THE NEWARK WORKS, LICKING COUNTY, OHIO.54

The very extensive and complicated series of works here presented occur at the junction of the South and Raccoon forks of Licking river, one mile west of the town of Newark, Licking county, Ohio. Like those at Marietta, the works in question occupy a high fertile plain. This plain is here of great extent, and elevated from thirty to fifty feet above the alluvions bordering the streams: it is for the most part level, but in places broken and undulating.

These works are so complicated, that it is impossible to give anything like a comprehensible description of them. The plan, with the illustrative supplementary plans and sections, will furnish a better conception, as a whole and in detail, than could be afforded in any other way. It will be the object of the text to supply such information as cannot be obtained from the plan.

The group covers an extent of about two miles square, and consists, as will be observed, of three grand divisions, connected by parallels and works of a minor character. The walls of the parallels, and of the irregular portions of the works generally, as well as of the small circles, (of which there are a considerable number,) are very slight; for the most part not exceeding four feet in height. p068 The embankments of the principal, or regular portions of the works, are much heavier. Those of the larger circular work, E, are about twelve feet in perpendicular height by fifty feet base, and have an interior ditch seven feet deep by thirty-five wide. At the gateway or entrance, the walls are much higher than at any other point, being not less than sixteen feet in altitude, with a ditch thirteen feet deep, giving an absolute height of about thirty feet from the bottom of the ditch to the top of the embankment. The wall of the lesser circle, F, is six feet in height, and is unaccompanied by a ditch. The walls of the octagonal, as well as of the square work, are but five and a half feet high, and are also destitute of ditches, either exterior or interior.

Fig. 12.

Fig. 13.—A gateway of octagon, looking inward.

The circular structure E is undoubtedly one of the best preserved and most imposing in the State. There are many enclosing larger areas, but none more clearly defined. At the entrance, which is towards the east, the ends of the walls curve outwards, for the distance of a hundred feet, leaving a passageway eighty feet wide, between the deep ditches on either hand. Here, covered with the gigantic trees of a primitive forest, the work presents a truly grand and impressive appearance; and, in entering the ancient avenue for the first time, the visitor does not fail to experience a sensation of awe, such as he might feel in passing the portals of an Egyptian temple, or in gazing upon the silent ruins of Petra of the desert. This work is not, as has been generally represented, a true circle; its form is that of an ellipse, its diameters being twelve hundred and fifty feet, and eleven hundred and fifty feet res­pec­tive­ly. There are two or three slight ir­reg­u­lari­ties in the out­line, too trifling however to be indicated in the plan. The area of the enclosure is something over thirty acres. It is an almost perfect level, and is still covered with the original forest. Immediately in the centre of the area is a mound of singular shape, of which an enlarged plan, Fig. 12, is here given. It much resembles some of the “animal-shaped mounds” of Wisconsin, and was probably designed to represent a bird with expanded wings. It can hardly be called a mound, but is rather a group of four, so arranged and connected as to constitute an unbroken outline. Denominating the figure, for the sake of distinction, a bird, the dimensions are as follows: Length of body, one hundred and fifty-five feet; of each wing, one hundred and ten feet; between the tips of the wings, measuring in a right line, two hundred feet; width of body, sixty-three feet; of wings, in centre, forty-five feet; of same, next the body, forty feet; height of mounds composing the body, seven feet; of mounds composing the wings, five feet. The head of the bird points directly towards the entrance of the enclosure. The bearing of the body is S. 65° E. Immediately in the rear of the effigy, and one hundred feet distant, is a semi-circular embankment, about two hundred feet in length; it is but slightly elevated, and can hardly be traced; it is nevertheless exhibited in the plan. The long mound, constituting the body of the bird, has been opened. Upon examining the excavation, it was found that the structure had originally contained an altar: whether any relics were found upon it, is unknown. This feature, in conjunction with others, seems p069 to point out a religious or superstitious design to this individual structure, if not to the whole group of works with which it is connected.

Fig. 14.

Fig. 15.

Passing over the in­ter­med­iate in­tri­cate works, of which it would be futile to attempt a description, we come to the octagon and its dependencies. The angles of this octagon, it will be observed, are not coincident, although its sides are very nearly equal. At each of the angles is a gateway, which is covered upon the interior by a small, truncated pyramidal elevation, (Fig. 14,) five feet in height, and measuring eighty by one hundred feet at the base. These are placed about sixty feet interior to the walls. The area of this work, which is a rich and beautiful level, is something over fifty acres. Connected with the octagon by parallels three hundred feet long, and placed sixty feet apart, is the smaller circle F. Unlike the other circular work, this is a true circle, two thousand eight hundred and eighty feet, or upwards of half a mile in circumference. It encloses no mounds, but possesses a remarkable feature in the line of the wall, at a point immediately opposite the entrance. This consists of a crown work, (Fig. 15,) which is wholly unlike anything heretofore noticed. It would almost seem that the builders had originally determined to carry out parallel lines from this point; but after proceeding one hundred feet, had suddenly changed their minds and finished the enclosure, by throwing an immense mound across the uncompleted parts. This mound, which may be taken as constituting a part of the wall of the enclosure, is one hundred and seventy feet long, eight feet higher than the general line of the embankment, and overlooks the entire work. It has been called the “Observatory,” from this fact: it probably had some other purpose than that of a look-out, but what purpose, it is not undertaken to say. It has been pretty thoroughly excavated, but the excavations seem to have disclosed nothing, except an abundance of rough stones, which must have been brought from the creek or some other remote locality, as none are scattered over the remarkable plain upon which these works are situated. p070

Fig. 16. View of “observatory” from the interior.

From the octagon lead off three lines of parallel walls: those extending towards the south have been traced for nearly two miles, and finally lose themselves in the plain; the remaining parallels terminate as shown in the plan. They are upwards of a mile in length. The walls composing these singular lines are placed about two hundred feet apart, and are parallel throughout. A singular feature occurs in the northern one, which is exhibited by the transverse section g h. For the space of a quarter of a mile, advantage is taken of a slight natural ridge to construct between the walls a broad embankment, something higher than the parallels themselves. It is broad enough to permit fifty persons to walk abreast. A similar peculiarity is observed in the short parallel leading from the square enclosure towards the great circle E, and is exhibited by the section i l. A feature somewhat analogous occurs within the parallels extending from the irregular works on the extreme right of the plan. This parallel is carried down the bank of the third terrace, which is here fifteen or twenty feet high. Within the lines, the bank is cut down, and regularly graded to an easy ascent. The pathway or road, for a portion of its extent upon the alluvions, is elevated above the walls, as shown in longitudinal section m n. A similar grade is constructed at the extremity of the northern parallel, where the natural bank is much higher than at any other point. Here the bank is excavated inwardly, for upwards of one hundred and fifty feet; and a portion of the earth is appropriated to form an elevated way over the low swampy ground immediately at the foot of the terrace. These excavations constitute quite imposing features, when viewed on the spot, but are hardly distinguishable upon the plan.

A number of small circles are found connected with the works, and are chiefly embraced in the area between the two principal parallels. They are about eighty feet in diameter, without gateways opening into them; and it has been suggested that they probably mark the sites of ancient circular dwellings. The circles indicated by the letter G are of much larger dimensions, and are characterized by ditches interior to their walls. They each have a diameter of about two hundred p071 feet, and have elevated embankments constructed interior to the ditch, as seen in the plan. This peculiarity has been already remarked, in some of the works of the Scioto valley.

Upon the lower terraces, towards the point of junction between the South and Raccoon forks, a great number of mounds of various sizes are situated. Some are large, but for the most part they are small. A small truncated pyramid once existed here, but the construction of the Ohio canal, and the subsequent establishment of the village of Lockport at this point, have obliterated this as well as numerous other mounds. Indeed, these causes have resulted in the almost total destruction of the singular maze of embankments, which communicates directly with the square enclosure. The ancient lines can now be traced only at intervals, among gardens and outhouses. At the period when the original survey, upon which this plan is constructed, was made, which is twelve years ago, the lines could all be made out. A few years hence, the residents upon the spot will be compelled to resort to this map, to ascertain the character of the works which occupied the very ground upon which they stand.

Within the area partially enclosed by this series of works, was formerly a large natural pond, covering upwards of one hundred acres. It has been drained, so that the greater portion is under cultivation. Previous to the earthquake of 1811, which resulted in the destruction of New Madrid on the Mississippi, it is said but little water was contained in the basin; after that event it rose to the depth of ten feet, and retained that level until the drainage took place. It has been suggested that it owed its origin to artificial excavation; but it is incontestably natural, like several other smaller depressions in the vicinity, which still contain water. Excavations, denominated “wells,” from which the materials for the construction of the wall were taken, are abundant in the neighborhood of these works.

Several extraordinary coincidences are exhibited between the details of these works and some of those already described. The smaller circle F is nearly identical in size with that belonging to the “Hopeton Works,” and with the one attached to the octagon, in the “High Bank” group. (See Plates XVI and XVII.) The works last named are situated upon the Scioto, seventy miles distant. The square has also the same area with the rectangle belonging to the Hopeton, and with the octagon attached to the High Bank Works. The octagon, too, has the same area with the large, irregular square at Marietta. The small circles G, G, G, betray a coincidence with those in connection with the works above mentioned, which ought not to be overlooked. It is not to be supposed that these numerous coincidences are the result of accident.

It would be unprofitable to indulge in speculations as to the probable origin and purposes of this group of works. That it could not have been designed for defence, seems too obvious to admit of doubt.55 The reasons urged against the p072 hypothesis of a defensive origin in the Marietta works apply with double force here. The structure which, from the height and solidity of its walls, would seem best adapted for defence, has its ditch interior to the embankment,—a blunder which no people possessing the skill and judgment displayed in the defensive works of the mound-builders, would be apt to commit.56

Hill works, incontestibly of a defensive origin, occur within four or five miles of this group, the relative positions of which are indicated by the “Map of six miles of the Newark Valley.” About four miles distant, and overlooking those works, is placed, upon the summit of a high hill, a gigantic effigy of some animal, probably the alligator. Of this remarkable structure a plan is presented on a subsequent page. Around these works, in the valley and crowning the hills bordering it, are numerous mounds, all of which, as compared with those of the Scioto, are singularly broad and flat. Many of them have been opened, but no account has been preserved of their character. So far as could be ascertained from diligent inquiry, they do not essentially differ in their contents from those found elsewhere in the State. Fifteen or twenty miles to the northward of these works, are others of an interesting character, which have never been investigated, and of which no public notice has yet been taken. p073

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XXVI. Marietta Works, Washington Co. Ohio.

PLATE XXVI. ANCIENT WORKS AT MARIETTA, OHIO.57

This remarkable group of works was among the earliest noticed by Western explorers. It was described by Harte as early as 1791; and a further account was presented in “Harris’s Tour,” published in 1805, in which an imperfect birds-eye view was also given. Since that period various descriptions have appeared in print; and a number of plans, differing materially in their details, have been published. It is of so much importance, however, and has been the basis of so much speculation, that it is time an accurate map and a careful description should be placed before the public. Such a map and such a description it is here aimed to present.

The works occupy the high, sandy plain, at the junction of the Muskingum and Ohio rivers. This plain is from eighty to one hundred feet above the bed of the river, and from forty to sixty above the bottom lands of the Muskingum. Its outlines are shown on the map. It is about three fourths of a mile long, by half a mile in width; is bounded on the side next the hills by ravines, formed by streams, and terminates on the side next the river in an abrupt bank, resting upon the recent alluvions. The topography of the plain and adjacent country is minutely represented on this map.

The works consist of two irregular squares, (one containing forty acres area, the other about twenty acres,) in connection with a graded or covered way and sundry mounds and truncated pyramids, the relative positions of which are shown in the plan. The town of Marietta is laid out over them; and, in the progress of improvement, the walls have been considerably reduced and otherwise much obliterated; yet the outlines of the entire works may still be traced. The walls of the principal square, where they remain undisturbed, are now between five and six feet high by twenty or thirty feet base; those of the smaller enclosure are somewhat less. The entrances or gateways at the sides of the latter are each covered by a small mound placed interior to the embankment; at the corners the gateways are in line with it. The larger work is destitute of this feature, unless we class as such an interior crescent wall covering the entrance at its southern angle. p074

Fig. 17.

Within the larger enclosure are four elevated squares or truncated pyramids of earth, which, from their resemblance to similar erections in Mexico and Central America, merit a particular notice.58 Three of these have graded passages or avenues of ascent to their tops. The principal one is marked A in the plan, and an engraving more clearly illustrating its features is herewith presented, Fig. 17. It is one hundred and eighty-eight feet long by one hundred and thirty-two wide, and ten high. Midway upon each of its sides are graded ascents, rendering easy the passage to its top. These grades are twenty-five feet wide and sixty feet long. The next in size is marked B in the plan, and is one hundred and fifty feet long by one hundred and twenty wide, and eight feet high. It has three graded passages to its top, viz. upon the north, west, and east. Those at the sides are placed somewhat to the north of the centre of the elevation. Upon the south side there is a recess or hollow way, instead of a glacis, fifty feet long by twenty wide. This elevation is placed upon an easy swell or ridge of land, and occupies the most conspicuous position within the enclosure, every part of which is commanded from its summit. A few feet distant from the northern glacis, is a small conical mound, surrounded with shallow excavations, from which the earth for its construction, and, perhaps, for the construction in part of the pyramidal structure, was taken. To the right of the elevation, and near the eastern angle of the enclosure, is a smaller elevation one hundred and twenty feet long, fifty broad, and six feet high. It had graded ascents at its ends, similar in all respects to those just described. It is now much obliterated. Near the northern angle of the work is another elevation, not distinctly marked. The two larger squares are covered with a close turf, and still preserve their symmetry. Indeed, no erections of earth alone could surpass them in regularity. They are perfectly level on the top, except where some uprooted tree has displaced the earth.

There is a passage or gateway one hundred and fifty feet wide, in the middle of the left wall of this enclosure, on the side next the Muskingum. Leading from it towards the river, and at right angles to the embankment, is the “Sacra Via,” a graded or covered way of singular construction. It is six hundred and eighty feet long by one hundred and fifty wide between the banks, and consists of an excavated passage descending regularly from the plain, upon which the works just described are situated, to the alluvions of the river. The earth, in part at least, is thrown outward upon either side, forming embankments from eight to ten feet in height. The centre of the excavated way is slightly raised and rounded, after the manner of the paved streets of modern cities. The cross section g h exhibits this feature. p075 This section is constructed from measurements taken at a point midway between the top and base of the grade. Measured between the summits of the banks, the width of the way is two hundred and thirty feet. At the base of the grade, the walls upon the interior are twenty feet high. From this point there is a slight descent, for the distance of several hundred feet, to the bank of the river, which is here thirty-five or forty feet in height. It has been conjectured by some, that the river flowed immediately at the foot of this way at the time of its construction. This is, however, mere conjecture, unsupported by evidence. If admitted, it would give to this monument an antiquity greatly superior to that of the pyramids, unless the deepening of our river channels has been infinitely more rapid in times past, than at present. But one fact favors the conjecture, and that is the entire absence of remains of antiquity upon the beautiful terraces to which this graded passage leads. They may nevertheless have been once as thickly populated as they now are; and this passage may have been the grand avenue leading to the sacred plain above, through which assemblies and processions passed, in the solemn observances of a mysterious worship.

To the south of the smaller enclosure is a finely formed truncated mound, (a view of which is given in a subsequent Plate,) thirty feet high, and surrounded by a circular wall, constituting a perfect ellipse, the transverse and conjugate diameters of which are two hundred and thirty feet, and two hundred and fifteen feet respectively.59 This beautiful monument is now enclosed in the public cemetery, and is carefully guarded from encroachment. A flight of steps ascends to its summit, on which seats are disposed, and from which a beautiful prospect is commanded.60 In the vicinity occur several fragmentary walls, as shown in the map. p076

Excavations, or “dug holes,” are observable at various points around these works. Near the great mound are several of considerable size. Those indicated by m and n in the plan have been regarded and described as wells. Their regularity and former depth are the only reasons adduced in support of this belief. The circumstance of regularity is not at all remarkable, and is a common feature in excavations manifestly made for the purpose of procuring material for the construction of mounds, etc. Their present depth is small, though it is represented to have been formerly much greater. There is some reason for believing that they were dug in order to procure clay for the construction of pottery and for other purposes, inasmuch as a very fine variety of that material occurs at this point, some distance below the surface. The surface soil has recently been removed, and the manufacture of bricks commenced. The “clay lining” which has been mentioned as characterizing these “wells,” is easily accounted for, by the fact that they are sunk in a clay bank!

Upon the opposite side of the Muskingum river are bold, precipitous bluffs, several hundred feet in height. Along their brows are a number of small stone mounds. They command an extensive view, and overlook the entire plain upon which the works here described are situated.61

Such are the principal facts connected with these interesting remains. The generally received opinion respecting them is, that they were erected for defensive purposes. Such was the belief of the late President HARRISON, who visited them in person, and whose opinion, in matters of this kind, is entitled to great weight. The reasons for this belief have never been presented, and they are not very obvious. The number and width of the gateways, the absence of a fosse, as well as the character of the enclosed and accompanying remains, present strong objections to the hypothesis which ascribes to them a warlike origin. And it may here be remarked, that the conjecture that the Muskingum ran at the base of the graded way already described, at the period of its erection, seems to have had its origin in the assumption of a military design in the entire group. Under this hypothesis, it was supposed that the way was designed to cover or secure access to the river,—an object which it would certainly not have required the construction of a passage-way one hundred and fifty feet wide to effect. The elevated squares were never designed for military purposes,—their very regularity of structure forbids the conclusion. They were most likely erected as the sites for structures which have long since passed away, or for the celebration of unknown rites,—corresponding in short, in purpose as they do in form, with those which they so much resemble in p077 Mexico and Central America. Do not these enclosed structures give us the clue to the purposes of the works with which they are connected? As heretofore remarked, the sacred grounds of almost every people are set apart or designated by enclosures of some kind.

Fig. 18.

The absolute identity in size between the smaller enclosure, (which varies a little from a true square,) and several of those which occur in the Scioto valley, should not be overlooked, in any attempt to educe the character and design of the group. That there is some significance in the fact is obvious. (See Plates XVI and XVII.) There are no other works in the immediate vicinity of Marietta. At Parkersburgh, Virginia, on the Ohio, twelve miles below, there is an enclosure of irregular form and considerable extent, a miniature plan of which, from the MSS. of Prof. Rafinesque, is herewith presented, Fig. 18. There are also some works at Belpre, opposite Parkersburgh.

The valley of the Muskingum is for the most part narrow, affording few of those broad, level, and fertile terraces, which appear to have been the especial favorites of the race of mound-builders, and upon which most of their monuments are found. As a consequence, we find few remains of magnitude in that valley, until it assumes a different aspect, in the vicinity of Zanesville, ninety miles from its mouth, where the interesting remains figured in the preceding Plate are situated.

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XXVII. Portsmouth Works, at the mouth of the Scioto river.

PLATE XXVII. THE PORTSMOUTH WORKS, SCIOTO COUNTY, OHIO.

The beautiful plain at the confluence of the Scioto and Ohio rivers, where now the flourishing town of Portsmouth is located, forms the site of a singular and interesting series of works. It has been preferred to present them together, as they seem to be intimately connected, leaving the reader to form his own conclusions respecting them.

The works consist of three divisions or groups, extending for eight miles along the Ohio river, and are connected by parallel lines of embankments. Two of these groups are on the Kentucky side of the river; the remaining one, together with the larger portion of the connecting embankment, on the Ohio shore. A reference to the accompanying map, exhibiting a section of eight miles of the Ohio valley, will show the relative positions and general plan, though not the exact proportions of the series. The avenues or “covered ways,” extending from one work to the other, have induced many persons to assign them a military origin, and a design to protect communication between the groups. But unless the work at A be regarded as a work of defence, it is very certain that we must seek for some other explanation of their purposes. These avenues constitute a p078 remarkable feature; and as enlarged plans and full descriptions of the several groups follow, it may be well to notice them more particularly here. It will be seen that from the central group B, three lines lead off: one to the south-east, to a point on the Ohio, nearly opposite to which, on the Kentucky side, it is resumed, leading to the circular work C; another bears south-west, to a point on the river, nearly opposite the large and regular work A. It does not appear to be resumed on the other side of the river. A third line runs north-west for a considerable distance, and loses itself in the broken grounds towards the Scioto. It may have communicated with other works in that direction, which have been obliterated by time, or, which is most likely, were destroyed in the manifest changes which the plain in that direction has undergone within a few centuries.

These lines consist of parallel embankments of earth, now measuring about four feet in height, by twenty feet base. They are not far from one hundred and sixty feet apart. The line leading towards the mouth of the Scioto, however, at about midway of the distance, suddenly contracts to seventy feet. It is said to have as suddenly widened further on, enclosing a square area, with a gateway opening to the north. The town of Portsmouth is built over this portion, and all traces of the parallelogram and the walls have disappeared. Near the point of contraction in this line are two or three mounds of medium size.

It is a fact to be observed in these as in similar lines at other places, that they are not interrupted by the inequalities of the ground, but conform to the undulations of the surface, running sometimes at right angles to the terrace banks, and sometimes diagonally up and down them. At some points these banks are very steep,—so steep, indeed, that in clambering up them the explorer is inclined to doubt that they were ever used or intended for purposes of communication. The only interruptions are those caused by the passage of streams, there being no gateways observable. The total length of the parallels now traceable may be estimated at eight miles, giving sixteen miles of embankment to the parallels alone. If we include the walls of the entire series, we have a grand total of upwards of twenty miles.

After this general view, the reader will be prepared to examine the groups forming the series A, B, and C, in the order of their succession.

PLATE XXVIII. PORTSMOUTH WORKS—GROUP A.

The singular work, a plan of which is here given, occurs on the Kentucky side of the Ohio river, opposite the old mouth of the Scioto, about two miles below the town of Portsmouth. The terrace on which it is situated is elevated some fifty feet above the first bottom, and extends back to the hills, which at this point p079 are at some distance from the river. It is much cut up by ravines, and is quite uneven.

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• XXVIII. Portsmouth Works.

  • No. 1. Group A.

  • No. 2. Group B.

  • No. 3. Group C.

The main body of the work is situated upon a very beautiful level, somewhat ascending to the east. The wings are on equally beautiful levels, except that they are broken at two or three points by ravines.

The principal work is an exact rectangle, eight hundred feet square. The walls are about twelve feet high, by thirty-five or forty feet base, except on the east, where advantage is taken of the rise of ground, so as to elevate them about fifty feet above the centre of the area. This feature is exhibited in the section a b.

The hollow way between the south-eastern wall and the terrace bank beyond seems artificial,—at any rate, it has been modified by art. The gateway on this side is entered by a slightly elevated causeway. At the southern angle is a bastion, probably natural but adapted by art, which commands the hollow way or ditch. The wall at this part is distinctly marked, but not more than three feet high. On the south-western side is a sort of runway, resembling a ditch, which loses itself in a deep gully towards the river. It is undoubtedly wholly or in part artificial. There are no traces of ditches elsewhere about the work. A narrow gateway thirty feet wide opens in the middle of each side, and at the northern and western angles, as represented in the plan.

The most singular features of this structure are its outworks, which consist of parallel walls leading to the north-east and south-west. They are exactly parallel to the sides of the main work, and are each two thousand one hundred feet long. Some measurements make them of unequal lengths; but after a careful calculation of the space occupied by the interrupting ravines, they are found to be very nearly, not exactly, of the same length.

The parallel to the south-west has its outer wall in line with the north-western wall of the main work, and starts at thirty feet distance from the same. It is broken by a deep ravine near its extremity, which is probably four or five hundred feet wide. Crossing the ravine, the walls, traces of which are seen on the declivity, continue to some distance, and then curve on a radius of one hundred feet, leaving a narrow gateway eight feet wide in the centre. Converging walls start from the point of curve, but lose themselves after running three hundred feet, without meeting. Just beyond and a little to the right, on the plain, are two clay mounds, also a small circle one hundred feet in diameter, the walls of which are two feet high.

The parallel to the north-east starts from the centre (nearly) of the main work, and is similar to the one already described, save that it is not terminated by converging walls, and has no mounds beyond. It is interrupted by two ravines, the walls running to their very edges. The left wall of the parallel bends to a right angle as it approaches the main work.

To the left of this parallel, four hundred and fifty feet from a point eight hundred feet distant from the main work, on a high peninsula or headland, is a singular redoubt, an enlarged view of which is given in the supplementary plan N. To the left of it is the bank of the second bottom, fifty feet high, and very steep. To the right is the hollow of a small stream with steep banks. The embankment of this work is heavy, and the ditch deep and wide, and interior to the wall. From p080 the bottom of the ditch to the top of the wall, is perhaps twelve or fifteen feet. The enclosed oval area is only sixty feet wide by one hundred and ten long. It has a gateway to the north-east ten feet wide,—outside of which, in the deep forest, is the grave of one of the first settlers. The object of this enclosure it is difficult to divine. If a place of burial, as has been suggested, properly conducted excavations would disclose the fact.

A light wall of some hundred paces in extent runs from the left hand entrance of the main work, along the verge of a declivity terminating at the western angle. On this side are also three mounds, each about six feet high,—formerly much higher, having been greatly reduced by the plough. From the western angle a deep gully runs off to the river; it has been mistaken by some for a covered way.

The entire main work, the greater part of the lower parallel, and a portion of the upper one, are now in open cultivated grounds. The walls of the main work are so steep as to preclude cultivation, and now form the fence lines of the area, which is fifteen acres. The area of the parallels is ten acres each;—total, thirty-five acres.

Between this work and the river are traces of a modern Indian encampment or town,—shells, burned stones, fragments of rude pottery, etc., also some graves. This was a favorite spot with the Indians, for various reasons, one of which is its proximity to a noted saline spring or deer lick, known as “McArthur’s Lick.”

From the size of the walls, their position, and other circumstances, it has been supposed that this was a fortified place. If palisaded, it would certainly be impregnable to any savage attack. If designed as a sacred place, its sloping area would be most fit for the observance of sacrifices or ceremonies.

What may have been the purpose of the mysterious parallels, is more than we, at this period, can venture to say.

PLATE XXVIII. PORTSMOUTH WORKS—GROUP B.

This group also occupies the third terrace, and, though not so imposing in magnitude as the one just described, seems to be the grand centre from which the parallel lines, characterizing this series of works, radiate. Its details are intricate, and can only be understood by the aid of the plan. The two crescent or horse-shoe-shaped walls constitute the first striking feature which presents itself. They are both of about the same size and shape, measuring eighty feet in length by seventy in breadth. The earth around them appears to have been considerably excavated. Enclosing these in part is a circular wall now about five feet high. The elevation to the right appears to be natural, although evidently much modified by art. It is eighteen feet high at the end next the principal division of the work, but gradually p081 subsides into a low ridge towards the enclosed mound a b. A full view of the entire group may be had from its summit. The mound just mentioned is twenty-eight feet high, by one hundred and ten base; it is truncated and surrounded by a low circumvallation. There are several small circles, measuring from one hundred and fifty to two hundred and fifty feet in diameter; also a few mounds, in the positions indicated in the plan.

No one, after examining its details, would be apt to ascribe a military origin to this group. The most reasonable conjecture respecting it is, that it was in some way connected with the superstitions of the builders; in what manner, of course, it is impossible to determine. A thorough examination of the mounds might throw some light on the question. At any rate, it is entirely unique in many of its features, and furnishes an interesting study for the antiquary.

PLATE XXVIII. PORTSMOUTH WORKS—GROUP C.

This group is on the Kentucky shore, and principally occupies the third terrace, or high level at the base of the hills bordering the valley. The ground is here considerably broken. The northern portion of the work is somewhat lower than the remainder, and a small brook cuts through the outer wall on the south. This work is in many respects novel, and for this reason, as well as from the connection in which it is found, is entitled to an attention not otherwise merited; for no person looking merely for what is striking from position, or imposing from magnitude, would be apt to pay it a second visit. It consists of four concentric circles, placed at irregular intervals in respect to each other, and cut at right angles by four broad avenues, which conform in bearing very nearly to the cardinal points. A large mound is placed in the centre; it is truncated and terraced, and has a graded way leading to its summit. A reference to the plan and sections will exhibit in one view the dimensions and general aspect of the work, obviating the necessity of a detailed description.

The mound in the centre, at first glance, would be taken for a natural elevation; and it is possible that it is a detached spur of a hill, modified and perhaps enlarged by art. A hillock in such a position is, however, a circumstance of very rare occurrence. From the level summit of this mound, a complete view of every part of the surrounding work is commanded. Were it not for the obstructing forests, it is believed the eye might obtain, from this position, a view of the river and intermediate plain, as also of the works beyond, and several miles distant. On the supposition that this work was in some way connected with the religious rites and ceremonies of the builders, this mound must have afforded a most conspicuous place for their observance and celebration. And it is easy, while standing on its p082 summit, to people it with the strange priesthood of ancient superstition, and fill its avenues and line its walls with the thronging devotees of a mysterious worship. Whatever may have been the divinity of their belief, order, symmetry, and design were among his attributes; if, as appears most likely, the works that most strongly exhibit these features were dedicated to religious purposes, and were symbolical in their design.

About one mile to the west of this work are a number of mounds, some of considerable size, and also a small circular work, D, of exquisite symmetry and proportion. It consists of an embankment of earth five feet high by thirty feet base, with an interior ditch twenty-five feet across by six feet deep, enclosing an area ninety feet in diameter, in the centre of which rises a mound eight feet high by forty feet base. A narrow gateway through the parapet, and a causeway over the ditch, lead to the enclosed mound.