Ancient Monuments of the Mississippi Valley by Ephraim G. Squier

Author:Ephraim G. Squier [Squier, Ephraim G.]
Language: eng
Format: epub
ISBN: 978-1-58834-523-3
Publisher: Smithsonian
Published: 2015-10-26T16:00:00+00:00

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 are at some distance from the river. It is much cut up by ravines, and is quite uneven.

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.

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