Also known as Bear Lodge Butte, is a unique geological formation located in northeastern Wyoming, United States. 1. Formation: Devils Tower is a laccolithic butte, which means it is a volcanic feature formed by the intrusion of magma into sedimentary rocks. It was formed around 50 million years ago during the Eocene epoch. 2. Composition: The tower is made up of phonolite porphyry, a type of igneous rock. Its distinctive vertical columns were formed as the magma cooled and contracted, creating hexagonal or pentagonal columns that extend vertically. 3. Height and Dimensions: Devils Tower stands at a height of 867 feet (264 meters) from its base to the summit. The tower has a circumference of approximately 1.3 miles (2.1 kilometers) at its base. 4. Sacred Site: Devils Tower holds great cultural and spiritual significance for several Native American tribes, including the Lakota, Cheyenne, Kiowa, and Arapaho. It is considered a sacred site and is often used for religious ceremonies and vision quests. 5. National Monument: In 1906, Devils Tower became the first national monument in the United States when President Theodore Roosevelt designated it as such. It is now managed by the National Park Service.

6. Climbing: Devils Tower is a popular destination for rock climbers from around the world. There are numerous established climbing routes on its vertical walls, ranging in difficulty from beginner to advanced. 7. Wildlife: The area around Devils Tower is home to a diverse range of wildlife, including deer, pronghorn antelope, coyotes, foxes, and various bird species. Visitors may spot these animals while hiking or exploring the monument. 8. Close Encounters of the Third Kind: Devils Tower gained international fame after being featured prominently in the 1977 science fiction film "Close Encounters of the Third Kind" directed by Steven Spielberg. The tower plays a significant role in the movie's plot, attracting extraterrestrial contact. 9. Visitor Center and Activities: Devils Tower National Monument has a visitor center that provides information about the tower's geology, history, and cultural significance. Visitors can also enjoy hiking trails, picnicking, camping, and wildlife viewing within the monument. 10. Geological Intrigue: Despite extensive research, the exact process by which Devils Tower was formed remains somewhat mysterious. Scientists continue to study the tower to better understand its unique formation and its geological significance.