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Lava Bombs

a field of dark gray rocks of varying shapes and sizes on a black cinder hillside with a large cinder cone in the distance

Lava or volcanic bombs are rocks that form when lava fragments cool before they hit the ground. The shape of the bomb depends on many factors such as the thickness of the lava, the size of the fragment, its movement, and how it cools.

U.S. National Park Service

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Craters of the Moon National Monument and Preserve, Code: CRMO

Craters of the Moon National Monument and Preserve, Idaho
Latitude: 43.0189094543457, Longitude: -113.626800537109

NPS.gov Collection

7/16/2010 12:43:02 PM

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Sunday, December 31, 2017 3:48:31 PM

Thursday, August 19, 2021 1:27:30 PM

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