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20171207-usgs-61G Lava Breakout-01

On Tuesday, December 5, while mapping the 61g lava flow field, HVO geologists found that the active breakouts closest to the emergency route were 1.8 km (1.1 miles) from the gravel road. This spiny pāhoehoe breakout was small, about one meter (yard) in size, and weak. Photo taken Wednesday, December 6, 2017 courtesy of U.S. Geological Survey

On Tuesday, December 5, while mapping the 61g lava flow field, HVO geologists found that the active breakouts closest to the emergency route were 1.8 km (1.1 miles) from the gravel road. This spiny pāhoehoe breakout was small, about one meter (yard) in size, and weak. Photo taken Wednesday, December 6, 2017 courtesy of U.S. Geological Survey

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