By far the most extraordinary and interesting earthwork discovered in the West is the Great Serpent, situate on Brush Creek at a point known as the "Three Forks," near the north line of Adams county, Ohio. It occupies the summit of a high crescent-form hill or spur of land, rising a hundred and fifty feet above the level of Brush Creek, which washes its base. The side of the hill next the stream presents a perpendicular wall of rock, while the other slopes rapidly, though it is not so steep as to preclude cultivation. The top of the hill is not level but slightly convex, and presents a very even surface one hundred and fifty feet wide by one thousand long, measuring from its extremity to the point where it connects with the table land. Conforming to the curve of the hill and occupying its very summit is the serpent, its head resting near the point and its body winding back for seven hundred feet in graceful undulations, terminating in a triple coil at the tail. The entire length, if extended, would be not less than one thousand feet. The neck of the serpent is stretched out and slightly curved, and its mouth is opened wide as if in the act of swallowing or ejecting an oval figure which rests partially within the distended jaws. This oval is formed by an embankment of earth, without any perceptible opening, four feet in height, and is perfectly regular in outline, its transverse and conjugate diameters being one hundred and sixty and eighty feet respectively. The ground within the oval is slightly elevated: a small circular elevation of large stones much burned once existed in its centre, but they have been thrown down and scattered by some ignorant visitor, under the prevailing impression probably that gold was hidden beneath them. The point of the hill within which this egg-shaped figure rests seems to have been artificially cut to conform to its outline, leaving a smooth platform, ten feet wide and somewhat inclining inwards, all around it. Upon either side of the serpent's head extend two small triangular elevations ten or twelve feet over. They are not high, and although too distinct to be overlooked, are yet much too much obliterated to be satisfactorily traced.