Scientists map a new underwater caldera, dubbed First Volcano, discovered using multibeam sonar.

Scientists map a new underwater caldera, dubbed First Volcano, discovered using multibeam sonar. Image courtesy of Submarine Ring of Fire 2012: NE Lau Basin, NOAA-OER.

Related Links

Submarine Ring of Fire 2012: Daily Updates

Submarine Ring of Fire 2012: NE Lau Basin

NOAA Ocean Explorer Gallery