Further erosion has in several places carried away the limestone from around these intrusive masses, allowing them to project above the present surface. Sometimes, where the sand piled up, they resemble haystacks; but usually they are of indefinite form, having spread out on the floor of the cavern, as such material will do in a shallow stream.
An interesting example of this action is the "Standing Rock," 4 miles west of Linn Creek, the county seat. Here was formerly a large cave with an eastward trend until near the mouth, when it turned sharply southward, the opening being in the direction of a little stream. The lower end of this cave became solidly filled with sand, and the water found an outlet farther back. All the limestone which formed the roof and walls of the middle portion of the cave is gone, a narrow ravine marking its course. The sandstone obstruction held its place, and now extends directly across the ridge between the two ravines. Its surface is an exact cast of the interior of the cave which it filled, and nodules of chert, remaining when the limestone dissolved, are still imbedded in its surface. The line of demarkation between the limestone matrix, where this still exists in part, and the siliceous filling is as distinct as that between the stone and brick in a building. The loose cave earth shows plainly under the sandstone near the former mouth of the cavern. Plan and section are shown in figures 20 and 21.
MILLER COUNTY
WRIGHT CAVE (30)
A mile and a half west of Brumley, near Glaize Creek, is Wright, or Brumley, Cave. The entrance is 15 feet high and 40 feet wide. At 20 feet from the mouth the width contracts to 20 feet. The depth is 120 feet in daylight to a stalagmite floor. Dry cave earth extends for 35 feet from the entrance, at which distance it reaches tough, sticky clay; this continues to the stalagmite. Above the clay are growing stalactites.
Fig. 20.—Plan of Fossil Cave.[ToList]
In front of the entrance were a few flint chips, but no indications of pottery or shell. A small implement, shown in figure 22, was found which is of interest because it was worked to a sharp point at one end of a narrow drill, while the other end widened into a squared form with a straight base which was dulled and polished from use as a cutting tool; the entire surface was polished from long service. An object of this kind would be highly suitable for mending moccasins and leggins. Finding this and nothing else strengthens the probability that this cave was used as a temporary camping place, but was never permanently occupied.