14.601 N, 144.775 E
summit elevation -300 m
West Rota is a submarine volcano with a 25 km diameter base and a caldera 6 × 10 km. It contains a disrinctly different composition to other volcanoes in the Mariana arc. The volcano consists of a felsic caldera similar to that found in the Izu and Kermadec Arcs.
Submarine eruptions were observed in 2004 and 2006.
A caldera-forming eruption occurred 37,000-51,000 years ago.