Difference between revisions of "Cave"
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(New page: A cave is an air- or water- filled void beneath the ground, where there is insufficient rock to prevent (but not inhibit, or many cavers would lack challenges) human access. They can ...) |
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Revision as of 02:30, January 2, 2008
A cave is an air- or water- filled void beneath the ground, where there is insufficient rock to prevent (but not inhibit, or many cavers would lack challenges) human access.
They can be formed by
- acidic rainwater, often weak carbonic acid, eroding away large of rocks such as limestone.
- lava cooling and solidifying - either in bubbles, or when the crust of a lava flow solidifies, while the still-liquid lava underneath moves on.
- waves - on coasts, waves can pound out caves in cliffs.
