Devils Tower #2
by Science Photo Library
Title
Devils Tower #2
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Devils Tower National Monument, Wyoming, USA. This basalt tower rises almost 300 metres above a plain. It was formed by the cooling of a plug of underground magma produced by a volcano around 60 million years ago. Erosion of the softer surrounding soil and rock over the centuries slowly exposed the hard rock, causing it to project above the surface.
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July 5th, 2016
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