• Devils Tower (also known as Bear Lodge) is a butte, possibly laccolithic, composed of igneous rock in the Bear Lodge Ranger District of the Black Hills...
  • The eastern face of Devils Tower in the Black Hills of Eastern Wyoming. ... The rock columns that jut from the earth were not always called Devils Tower.
  • Devils Tower National Monument boasts one of Earth's most impressive geological features.
  • Devils Tower in Wyoming was formed from molten magma and was gradually exposed over millions of years as the surrounding rock was eroded away...
  • Devils Tower National Monument, the first U.S. national monument, established in 1906 in northeastern Wyoming, near the Belle Fourche River.
  • In 1906, President Theodore Roosevelt established Devils Tower as America’s first national monument. Located in northeastern Wyoming about 100 miles...
  • ...the laccolithic butte made up of igneous rocks known as Devils Tower is a jaw-dropping geological feature that rises 867 feet above Wyoming’s rolling prairies.
  • Devils Tower has remained a popular destination for rock climbers, who enjoy the 4-6 hour thrills of climbing the Tower's vertical faces.
  • Devils Tower National Monument is a striking geologic wonder considered sacred by many Native American tribes.
  • The oldest rocks visible in Devils Tower National Monument were laid down in a shallow sea during the mid- to late-Triassic period, 225 to 195 million years ago.