- volcano.oregonstate.edu devils-towerThe rock at Devils Tower is about 40 million years old. The rock is called a phonolite based on its mineral composition, which includes anorthoclase...
- exumguides.com ublminxportfolios/devils-tower/A minimum of two weeks advanced notice is required to book a Devils Tower trip. The trip from Jackson Hole to the Tower usually takes between eight and ten hours.
- summitpost.org devils-tower/150309Devils Tower is best characterized by its numerous, long crack systems. Free climbing routes, that lead to the Summit, range from 5.6 to 5.12 in difficulty.
- youtube.com watchDevil's Tower: America's Treasures | Devils Tower National Monument.
- studiousguy.com devils-tower-root-system/Rain and ice continue to erode the sedimentary rocks surrounding the base of the Devils Tower and over a period more of the Devils Tower will be exposed.
- icr.org article/devils-tower-mysterious-columns-…Many lavas form hexagon-shaped columns as they cool, but none are as large as the column widths (10 feet) at Devils Tower, or as tall.
- devilstowercountry.com destinations/parks-and-…Whether you’re a climber, a hiker, a biker, or simply love nature and its many wonders, Devils Tower is the kind of place that pushes you to reach new heights.
- softschools.com facts/us_geography/devils_tower_…A misinterpretation by Colonel Richard Irving Dodge's interpreter in 1875 during an expedition led to the name Bad God's Tower, and eventually Devils Tower.
- Nestled on 21 private acres of precious prairie and ponderosa pine, Devils Tower Lodge is a one of a kind, rustic experience.
- wyohistory.org encyclopedia/devils-towerDevils Tower became the first national monument, established that same year. Rising 1,267 feet above the Belle Fourche River, Devils Tower is hard to miss.