U.S. Geological Survey Photographic Library
ID. Jackson, W.H. 5
Reeds Rock, near Sherman, forms an excellent illustration of the style of weathering of the granites, characteristic of this region. These massive piles, like the ruins of old castles, are scattered all over the summits of the Black Hills, and the difference in the texture of the rock is such as to give a most pleasing variety of outline. They were once angular, cube-like masses, and have been worn to their present forms by the process of disintegration by exfoliation. Albany County, Wyoming. 1869.
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