• America's First

    Devils Tower

    National Monument Wyoming

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  • Climbing closure

    There is a climbing closure in effect on the SW butress of the Tower. Ask for details at the Climbing Office.

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Did You Know?

Close up of phonolite

Devils Tower is made of phonolite porphyry. Phonolite refers to the ringing of the rock when a small slab is struck, and its ability to reflect sound. Porphyry refers to its texture, large crystals of feldspar embedded in a mass of smaller crystals.