Chaco Rocks Minerals & Crafts
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Cave Types

There are five basic types of caves epigenic, hypogenic, lava tubes, tectonic, and boulder caves.

Epigenic cave - A cave formed by the action of surface waters descending into the ground and dissolving rock.

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Hypogenic cave - A cave formed by water rising up from below and dissolving the rock, usually as the result of two different kinds of water mixing together.

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Lava tube - A cave formed by cooling lava as it flows away from a volcanic vent.


Boulder cave - A cave that is essentially the spaces between fallen rock, also known as a talus cave. A Tectonic Cave is a cave formed when large slabs of solid rock move apart.

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