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20171221-usga-lava-flow-05

Breakouts were also active on the coastal plain, close to the base of the pali. Here, an HVO geologist marks a GPS waypoint. Photo taken Thursday, December 21, 2017 courtesy of U.S. Geological Survey

Breakouts were also active on the coastal plain, close to the base of the pali. Here, an HVO geologist marks a GPS waypoint. Photo taken Thursday, December 21, 2017 courtesy of U.S. Geological Survey

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