The deep-sea robot ABE (Autonomous Benthic Explorer) created this map of the active underwater Brothers Volcano. (See fly-through movies below.) This view looks from the south into the crater at the summit of the volcano, the site of recent eruptions and ongoing hydrothermal venting. The caldera has two volcanic cones, the smooth one in the left foreground rises about 350 meters (1,150 feet) above the caldera floor to a depth of about 1,100 meters (3,600 feet) below sea surface. A smaller cone to the right, which is probably older but still has an intense hydrothermal system at its summit. (Image courtesy of New Zealand American Submarine Ring of Fire 2007 Exploration, NOAA Vents Program, NOAA-OE.)[back]
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