Sulfur crusts in the vicinity of the cauldron implies past eruptions of sulfur.

The presence of extensive sulfur crusts in the vicinity of the cauldron implies past eruptions of sulfur. Image courtesy of Submarine Ring of Fire 2006 Exploration, NOAA Vents Program

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Submarine Ring of Fire 2006

Submarine Ring of Fire 2006: May 4 Log

NOAA Ocean Explorer Gallery

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