THE WORLD’S MOST AMAZING ROCK FORMATIONS
Devils Tower
Wyoming, USA
Towering above the trees of the Black Hills National Forest, this colossal monument appears to have sprouted straight from the underworld. The imposing geological formation is, in fact, the world’s largest example of columnar jointing. From base to summit, Devils Tower reaches 264 metres high and is comprised of many three-metre-wide hexagonal columns.
Born from the flames of the Earth’s core, geologists agree that this monument burst through our planet’s crust as magma and cooled close to the surface. It is this cooling process that gives the rocks their unique geometry. As the igneous rock cools down it begins to contract around stress points, and over time the pressure builds around these points.
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