• America's First

    Devils Tower

    National Monument Wyoming

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  • Campground

    The Belle Fourche River Campground is open for the summer season!

Operating Hours & Seasons

Visitor Center/Bookstore
Devils Tower National Monument is open 24 hours a day, 7 days a week except December 25 and January 1.

The Visitor Center and the DTNHA bookstore are open from 8:00 AM - 7:00 PM.

The Belle Fourche River Campground

The Belle Fourche River Campground is open for the summer season. campground

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.