. History of Pike and Dubois Counties, Indiana. s many natural advantages for makingit impregnable to the opposing forces of prehistoric times. Itoccupies the point of an elevated narrow ridge which faces theOhio river on the east and is bordered by Fourteen-Mile creek onthe west side. This creek empties into the Ohio a short distancebelow the fort. The top of the ridge is pear-shaped, with thepart answering to the neck at the north end. This part is notover twenty feet wide, and is protected by precipitous natural wallsof stone. It is 280 feet above the level of the Ohio river, and theslope i
. History of Pike and Dubois Counties, Indiana. s many natural advantages for makingit impregnable to the opposing forces of prehistoric times. Itoccupies the point of an elevated narrow ridge which faces theOhio river on the east and is bordered by Fourteen-Mile creek onthe west side. This creek empties into the Ohio a short distancebelow the fort. The top of the ridge is pear-shaped, with thepart answering to the neck at the north end. This part is notover twenty feet wide, and is protected by precipitous natural wallsof stone. It is 280 feet above the level of the Ohio river, and theslope is very gradual to the south. At the upper field it is 240 feethigh and one hundred steps wide. At the lower timber it is 120feet high. The bottom land at the foot of the south end is sixtyfeet above the river. Along the greater part of the Ohio riverfront there is an abrupt escarpment rock, entirely too steep to bescaled, and a similar natural barrier exists along a portion of thenorthwest side of the ridge, facing the creek. This natural wall. HISTORY OF INDIANA. 27 is joined to the neck of an artificial wall, made bj piling up, masonfashion but without mortar, loose stone, which had evidently beenpried up from the carboniferous layers of rock. This made wall, atthis point, is about 150 feet long. It is built along the slope of thehill and had an elevation of about 75 feet above its base, the upperten feet being vertical. The inside of the wall is protected by aditch. The remainder of the hill is protected by an artificial stonewall, bnilt in the same manner, but not more than ten feet elevation of the side wall above the creek bottom is 80 the artificial walls is a string of mounds which rise to theheight of the wall, and are protected from the washing of the hill-sides by a ditch 20 feet wide and four feet deep. The position ofthe artificial walls, natural clifis of bedded stone, as well as that ofthe ditch and mounds, are well illustrated. The top of th
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