Medicine Lake Glass Flow | lava

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Rocks formed by cooling of a molten source are called igneous rocks. Above the earth's surface, molten rocks are known as lava; below earth's surface, it is called magma.

www.fs.usda.gov/detail/klamath/specialplaces/?cid=stelp...
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Coordinates:   41°36'1"N   121°35'57"W
This article was last modified 12 years ago