PLATE VIII. No. 3.

The enclosure here represented is situated on the left bank of the Great Miami river, two and a half miles above the town of Piqua, Miami county, Ohio, upon the farm of Col. John Johnston, a prominent actor in the early history of Ohio. It occupies the third terrace, which here forms a bluff peninsula, bounded on three sides by streams. The banks of the terrace vary from fifty to seventy-five feet in height. The embankment is carried along the boundaries of the peninsula, enclosing an oval-shaped area of about eighteen acres. It is composed of earth intermixed with large quantities of stone, and is unaccompanied by a ditch. The stones that enter into the composition of the rampart are water-worn, and must have been brought from the bed of the river; which, according to Dr. Drake, for two miles opposite this work, does not at present afford a stone of ten pounds weight. A mound, five feet high and surrounded by a ditch, occurs within the work. There is also another, exterior to the walls, upon the second terrace, towards the river. This is classed as a defensive work, for very obvious reasons.[16]

Below this entrenchment, and on the present site of the town of Piqua, a group of works formerly existed, consisting of circles, ellipses, etc. These have been described at length, by Major Long.[17] There are also various small works on the opposite bank of the Miami. Indeed, the whole valley is here covered with traces of a former dense population.

PLATE VIII. No. 4.[18]

This work resembles one already described, No. 2 of this Plate. It is situated on the bank of the Great Miami river, three miles below Dayton, Montgomery county, Ohio. The side of the hill towards the river is very steep, rising to the p024 height of one hundred and sixty feet. The remaining sides are less abrupt. Upon the south is the principal gateway, and here the declivity is gentle. This gateway is covered upon the interior by a ditch, c c, twenty feet wide, and seven hundred feet long. At d d d are dug holes, from which it is apparent a portion of the earth composing the embankments was taken. At b is a natural depression forty feet deep, and covering not far from one and a half acres. At the northern slope of the narrow ridge which intersects the work, and within the line of the embankment of which it forms a part, is a small mound. From its top a full view of the surrounding country, for a long distance up and down the river, may be obtained. A terrace, apparently artificial, skirts the north-west side of the hill, thirty feet below the embankment. As remarked in a former instance, this terrace may be natural; it has, however, all the regularity of a work of art.

PLATE IX. No. 1. FORTIFIED HILL, NEAR GRANVILLE, LICKING COUNTY, OHIO.

The work here represented is situated two miles below the town of Granville, Licking county, Ohio. It encloses the summit of a high hill, and embraces an area of not far from eighteen acres. The embankment is, for the most part, carried around the hill at a considerable distance below its brow, and is completely overlooked from every portion of the enclosed area. Unlike all other hill-works which have fallen under notice, the ditch occurs outside of the wall; the earth in the construction of the latter having been thrown upwards and inwards. This is observed equally at the points where the hill is steepest; and the result has been, in the lapse of time, that the ditch is almost obliterated, while the accumulating earth has filled the space above the wall, so that the appearance of the defence, at these points, is that of a high, steep terrace. The height of the wall varies at different places; where the declivity is gentle and the approach easy, it is highest,—perhaps eight or ten feet from the bottom of the ditch; elsewhere it is considerably less. The embankment conforms generally to the shape of the hill. It is interrupted by three gateways, two of which open towards springs of water, and the other, or principal one, upon a long narrow spur, which subsides gradually into the valley of Raccoon creek, affording a comparatively easy ascent.

Upon the highest part of the ground enclosed in this work, is a small circle, one hundred feet in diameter, within which are two small mounds. There is also another truncated mound, a little distance to the northward of the circle. The mounds within the circle, upon excavation, were found, in common with all similar structures occurring within enclosures, to contain altars. No enduring remains seem to have been deposited upon these altars, which were covered with ashes, intermixed with small fragments of pottery. This is the only hill-work which has p025 been observed to embrace a minor work of the description here represented. The character of the principal enclosure can hardly be mistaken; it is palpably a defensive work, although deficient in that grand essential, a supply of water. If we concede, what can hardly admit of doubt, that the minor structure had a sacred or superstitious origin, we must of necessity arrive at the conclusion that the altars of the ancient people sometimes accompanied their defences.