Three-dimensional view of the Maug caldera (2 times vertical exaggeration). EM300 bathymetry data (10 meter grid cell size), ranging in depth from 241 to 25 m (790-82 ft). On this 2004 Submarine Ring of Fire expedition, the Maug survey was completed, providing complete coverage over the shallow central lava dome. Image courtesy of Submarine Ring of Fire 2004 Exploration, NOAA Vents Program.
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