Fig. 16.—Adz or gouge of chert from Miller's Cave.[ToList]
The red clay which had formed the floor of the excavated area from the mouth of the cavern to well past the central portion suddenly dipped to the north and to the east shortly before reaching the corner of the west wall. Attempts to follow it downward were frustrated by black earth, which when dug with pick or shovel assumed the consistency of "hog-wallow mud."
For a space of 4 or 5 feet inside the doorway, whose floor was about 3 feet higher than the average surface level in the cave, the ashes were not more than a foot thick, the clay rising to this extent. It spread out fan shape, with a continuous slope for several yards in every direction, thus making an easy grade for entrance and exit.
There are three ways in which this condition could have been brought about.
First, the aborigines may have constructed a graded way; though it is not at all likely they would have piled the clay so far to each side.
Secondly, it may have washed through the doorway from the outer cave when the main outlet of the latter in the face of the bluff toward D (fig. 13) was obstructed in some way. This is improbable.
Thirdly, it may be due to material deposited in the eddy or swirl created by the corner of the west wall whenever a large volume of drainage water flowed from the westward in the main cave and was sharply deflected toward the south when it struck the east wall. This is no doubt the correct explanation.
Fig. 17.—Clay pipe from Miller's Cave.[ToList]