Pacific Ring of Fire Expedition. ROPOS was covered in sulfur droplets after its close encounter with sulfur, rocks and ash at Brimstone Pit.

Image ID: expl0097, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Mariana Arc region, Western Pacific Ocean
Photo Date: 2004 April
Credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist

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