Half a mile directly south of Waynesville, on the farm of Dr. W.J. Sell, is a cave located in the northern end of a ridge entirely detached from the surrounding hills. The entrance, facing northeast, is halfway up the point of the ridge, overlooking a fertile bottom along Roubidoux Creek. From the top of the ledge over the entrance the hill has an easy upgrade for a fourth of a mile to the summit, which is at an elevation of 250 feet above the creek. On top of the hill is the site of an Indian village where some mortars, grinding stones, and numerous flints have been found.
The roof of the cave has partially fallen in at the entrance, forming a re-entrant curve 30 feet across and extending 11 feet inward; the large blocks from this, and from the stratum described later, were lying on and in the talus at the present front but did not extend to the red clay beneath. Some of the blocks could be reduced with a heavy sledge hammer to an extent that made it possible to roll them out of the way; but 24 of them had to be broken up with dynamite.
The talus at its thickest part has a depth of 6 feet; it extends down the hill on the outside and has washed back into the cave, gradually decreasing in quantity, to a distance of 50 feet. The roof, at the front, is 5 feet above the talus; the thickness of the ledge forming it is only 8 feet, the slope of the hill starting from this line. Owing to the restricted width of the ridge, on top, the entire area draining over the ledge measures only 70 feet in width above the entrance, and narrows irregularly to a breadth of 30 feet at an outcrop 120 feet up the hill, or with an approximate space of 6,000 square feet. On this small tract more than half the rock is bare, with scanty patches of soil and humus in the crevices and on flat places. At the present time the water which flows over the ledge during hard rains is scarcely turbid; consequently a period of several centuries was required for the débris to accumulate.
Fourteen feet back from the farthest-receding part of the curve of the roof at the front is the edge of a stratum 3 feet thick; the bottom of this was 3 feet above the talus immediately beneath it. This stratum is continuous, with a perceptible dip to the interior, as far as it can be seen.
The width of the cave at the mouth is 44 feet; 30 feet within it widens to 51 feet. A small amount of water making its way from the interior over the level floor collects in a little basin scooped out to receive it, and sinks into the floor near the inner foot of the talus 55 feet from the entrance. At this point the width of the cave is 36 feet; the height to the roof is 4½ feet. As the floor beyond here is soft mud, the cavern was not followed farther.
Owing to the limited space between the floor and the roof it was necessary to remove the excavated earth to the outside. The water which flows from the hill and falls upon the talus during rains also had to be provided against. A trench 4 feet wide at the bottom, with sufficient slant to the sides to prevent them from falling in, was started 25 feet out from the entrance, on a level which gave it a depth of 6½ feet at the highest point of the talus, thus carrying it a few inches into the clay which was the original floor of the cave. This depth also brought it well below the level of the little pool inside. When its greatest depth was reached the excavation was at once widened to 25 feet, thus reaching well toward the cliff on either side. Growing trees and large rocks made a greater width here impracticable.
In the talus were flint implements, none small enough for arrowheads, some well finished, others roughly made, a few being shown in plate 15; three sandstone mortars and fragments of four others; probably 100 cobblestones used as hammers and pestles, some of them pitted on the sides, a few showing marks of much use (pl. 16, A); a small, very solid piece of hematite worn round by use as a hammer; a small, imperfect tomahawk made of quartzite (pl. 16, B, a); many mussel shells, some used as knives and scrapers; animal bones, some of them worked into implements, including a perfect skiver (pl. 16, B, b); several pieces of hematite and limonite used as paint stones (pl. 16, B, c); many fragments of pottery, some of them worked into disks and perforated (pl. 16, B, d); occasionally small deposits of charcoal, ashes, and burned earth. The meager amount of artificial material, and its random distribution, as if one piece was lost here, another thrown there, throughout the talus from the present surface to the underlying clay would appear good evidence that the cave was never used as a place of permanent abode, but merely provided temporary refuge at intervals extending over a prolonged period.
