Cave Geology in Depth - Great Basin National Park (U.S
https://www.nps.gov/grba/planyourvisit/cave-geology-in-depth.htm
webApr 22, 2016 · A cave is a naturally occurring underground cavity. There are many different types of caves, including solution caves, tectonic caves, boulder caves, sea caves, and lava tubes. Tectonic caves tend to be relatively small and can form in almost any type of rock that has been highly fractured. Lava tubes are the fastest forming type of cave.
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