Operating Hours & Seasons
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.
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.