This pond of molten sulfur was discovered in 2006 roiling in the bottom of a small crater.
Molten Sulfur
Image courtesy of Submarine Ring of Fire 2014 - Ironman, NSF/NOAA, Jason, Copyright WHOI. Download larger version (jpg, 2.4 MB).

This pond of molten sulfur was discovered in 2006 roiling in the bottom of a small crater.

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