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stone wall built across the mouth, leaving an entrance a little less than 7 feet in width which was closed by gates. Inside the barrier the floor, now made tolerably level, extends about 30 feet toward the rear, to the natural rock wall, and is 50 feet from side to side, with a roof from 6 to 15 feet high. In the wall at the rear are two small openings through which explorers can pass to large chambers farther within. To the right of the front chamber is a branch cave which is high and wide at the beginning but soon becomes impassable from the accumulated rocks and earth rising to the roof. The left side of the front chamber is continued in another branch going directly back into the mountain. The roof and floor have an equal slope downward to a point some rods from the beginning, the clear space between them being not more than 4 feet. Beyond here the roof is high and there are some large expansions. A creek flows from the rear of the cave to a point estimated as 200 yards from the doorway, where it sinks into the earth. The noise of its fall is distinct throughout the front part of the cavern. There is considerable drip, and though dry stalactites and stalagmites occur in some places, over most of the front chamber their formation is still in progress. Outside of the doorway the solid rock walls show on each side, nowhere less than 25 feet apart. At a depth of 30 feet water flows from the rock and earth between these side walls, but there is no sign of solid bottom, so the depth of the cave is probably more than 30 feet below the present floor. Under existing conditions the cave would form an excellent shelter, being accessible, roomy, and with an abundant supply of fresh water. The drip from the ceiling could be avoided. But it does not follow that such was the case in the remote past. It is apparent that at one time the creek had its outlet through the mouth and down the gorge in front, the right branch of the cave being then open. From some cause, probably the formation of a sink hole above, water from the surface or near the surface found a way through this branch, carrying mud and rocks sufficient to fill the front chamber to its present floor, diverting the flow of the stream, and finally filling the cave through which it came. While the creek was flowing, occupation would be impossible, or at least inconvenient. When the mud began to settle in, the front portion would be shut off. This condition would hold unt
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