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20160930-usgs-lavaflow-61g-03

Posted on October 1, 2016.

A large skylight was open today on the 61g upper flow field. This morning, only the narrow skylight on the left was open. Hours later the larger area collapsed and exposed more of the swiftly moving lava stream in the tube. In this image, the skylight is about 5 m or 16 feet wide. Photo taken Friday, September 30, 2016 courtesy of USGS/HVO

A large skylight was open today on the 61g upper flow field. This morning, only the narrow skylight on the left was open. Hours later the larger area collapsed and exposed more of the swiftly moving lava stream in the tube. In this image, the skylight is about 5 m or 16 feet wide. Photo taken Friday, September 30, 2016 courtesy of USGS/HVO


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