Volcano O, a huge caldera in the Northeast Lau Basin. Image looks toward the north, 2 times vertically exaggerated.
Volcano O
Image courtesy of Susan Merle OSU, Submarine Ring of Fire 2012 Exploration, NOAA Vents Program. Download larger version (jpg, 4.2 MB).

Volcano O, a huge caldera in the Northeast Lau Basin. Image looks toward the north, 2 times vertically exaggerated.

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