For more information, contact the Devils Tower Chief of Interpretation and Education call (307) 467-5283 x 224.
Did You Know?
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.