Devils Tower is located in northeastern Wyoming near the town of Sundance. The park is physiographically located along northwestern boundary of the Black Hills. Devils Tower is "widely known as an outstanding example of columnar jointing and also as a remarkable physiographic feature" Dutton and Schwartz, Devils Tower in Devils Tower National Monument is a steep sided igneous body that displays spectacular columnar jointing.
The igneous rocks of Devils Tower formed about 40 million years ago Halvorson, when molten magma intruded the sedimentary rocks of the Black Hills region.
Geologists debate whether or not the magma reached the surface as a volcanic eruption. As the magma cooled and hardened, it cracked, forming spectacular columns. Overlying rocks and surrounding sedimentary rocks have been eroded away, allowing Monument visitors a view of these striking joint patterns. The striated surface of Devils Tower reflects the polygonal shaped fractures columnar joints that formed as magma contracted as it cooled and hardened.
This view shows the large rubble blocks that make up the talus apron around the base of Devils Tower. Learn More. Beulah Beulah is located on I, one mile from the South Dakota border. Sundance Sundance is located under the shadow of majestic Sundance Mountain in the Black Hills of Wyoming and is a close 28 miles from our first national Monument, Devils Tower. Washakie Museum and Cultural Center. Load More.
More Things To Do. Copy link. Copy Copied. This self-guided hike offers close-up views of the forest and wildlife, not to mention spectacular views of the Tower itself. The Red Beds Trail covers a much wider three-mile loop around the tower. Devils Tower National Monument is open 24 hours a day, 7 days a week except December 25 and January 1.
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