A close up of the ‘aâ€˜Ä flow texture, showing the fluid, incandescent interior as well as the rubbly clinker. Photo taken Thursday, December 21, 2017 courtesy of U.S. Geological Survey
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Posted on December 22, 2017.
A close up of the ‘aâ€˜Ä flow texture, showing the fluid, incandescent interior as well as the rubbly clinker. Photo taken Thursday, December 21, 2017 courtesy of U.S. Geological Survey
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