Fig. 26.—Cross section of Fort Deposit Cave at 26 feet.[ToList]
At 29 feet the underlying yellow earth became comparatively level across its upper surface, again closely resembling a river deposit. The darker earth above it contained a greater amount than heretofore of ashes, bones in small pieces, potsherds, mussel, snail, and periwinkle shells, and the like. More charred corn was found along here.
Fig. 27.—Cross section of Fort Deposit Cave at 28 feet.
At 30 feet the yellow earth began to rise, and at 32 feet it was very little more than 3 feet lower than the top of the highest ashes. A section at this point is shown in figure 28. At 35 feet the strata became quite regular and uniform from wall to wall. The dark earth, next above the yellow, measured 3 feet in thickness at the center, and while showing by its admixture of ashes, etc., that it had been thrown here, had evidently formed the floor for a considerable time. The upper foot was burned red or dark from long-continued fires, the ashes above it being from 6 to 8 inches thick, and forming the present floor of the cave at this place. The dark earth contained much less of refuse than nearer the entrance; such shells and ashes as appeared were promiscuously distributed and not in little piles or masses as before. A section at 35½ feet appears in figure 29. It may be remarked here that this is the only sketch in which the upper line coincides with the surface of the deposits. In the others a thin covering, less than 6 inches at any point, of disintegrated material from walls and roof covers the ashes left by aboriginal fires. This is omitted from the drawings.
