Devils Tower National Monument is a natural monument in Wyoming, USA. It is a monolith of volcanic origin with a height of 1556 m above sea level and a relative height of 386 m. It is the first site to be recognized as a "national monument" by the United States, having received its status from President Theodore Roosevelt on September 24, 1906. The Devil’s Tower was formed from a magmatic melt that rose from the depths of the Earth and froze in the form of graceful columns. Devils Tower is estimated to be between 225 and 195 million years old. Accommodating rocks are represented by dark red sandstones, aleurites with shale layers.Solid areas: 30%
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