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Show 32 • cular, 200 feet in diameter, divided equally between the two kinds of rocks, reaching, within a few feet, the top of the bluff above and the level of the valley below. It runs back in a semicircular sweep to a depth of 100 feet; the top is a perfect half dome, and the lower halt' only less so from' 4the accumulation of debris and the thick brushy foliage, the cool dampness of its shadowed interior, where the sun never touches, favoring a luxuriant growth. A strata ot harder rock across the central line of the cave has left a bench running around its entire half circle, upon which is built the row of buildings which caught our attention half a mile away. In figure 3, Plate 16, we have a plan of a horizontal section of the cave, showing the ledge and the manner of the disposition of the buildings upon it; in the drawing at the top of Plate 17, we have a view of them as seen from the opposite side of the cave. It will be seen that the houses occupy the left hand or eastern half of the cave, for the reason, probably, that the ledge was wider ou that side, and the wall back of it receded in such a manner as to give considerable additional room for the second floor, or for the upper part of the one-story rooms. It is about 50 feet from the outer edge in to the first building, a small structure 16 feet long, 3 feet wide at the outer end, and 4 at the opposite end; the walls, standing only four feet on the highest remaining corner, were nearly all tumbled in. Then came an open space 11 feet wide and 9 deep, that served probably as a sort of workshop. Four hoies were drilled into the smooth* rock floor, about 6 feet equidistantly apart, each from 6 to 10 inches deep and 5 in diameter, as perfectly round as though drilled by machinery. We can reasonably assume that these people were familiar with the art of weaving, and that it was here they worked at the loom, the drilled holes supporting its posts. At ft, in this open space, are a number of grooves worn into the rock in various places, caused by the artificers of the little town in shaping and polishing their stone implements. The main building comes next, occupying the widest portion of the ledge, which gives an average width of 10 feet inside; it is 48 feet long outside, and 12 high, divided inside into 3 rooms, the first two 13& feet each in length, and the third 16 feet, divided into two stories, the lower and upper 5 feet in height. The joist holes did not penetrate through the walls, being inserted about 6 inches, half the thickness. The beams rested upon the sloping back- wall, which receded far enough to make the upper rooms about square. Window- like apertures afforded communication between each room, all through the second story, excepting that which opened out to the back of the cave. There was also one window in each lower room, about 12 inches square, looking out towards the open country, and in the upper rooms several small apertures not more than 3 inches wide were pierced through the wall, hardly more than peep- holes. The walls of the large building continued back in an unbroken line 130 feet farther, with an average height of 8 feet, and divided into 11 apartments, with communicating apertures through all. The first room was 9^ feet wide, the others dwindling down gradually to only 4 feet in width at the other extremity. The rooms were of unequal length, the following being their inside measurements, commencing from the outer end, viz: 12J, 9£, 8, 7£, 9, 10, 8, 7, 7, 8, 31 feet; the ledge then runs along, gradually narrowing, 50 feet farther, where another wall occurs across it, after which it soon merges into the smooth wall of the cave. The first of these rooms had an aperture leading outwards large enough to crawl through; the wall around it had been broken away so that its exact size could not be determined; all the others, of which there were about two to each room, were were peep- holes, about 3 inches in diameter, and |