A map showing the location of the Ring of Fire. Tonga is a archipelago of more than 170 islands in the South Pacific Ocean. There are around 36 undersea volcanoes near Tonga. The Hunga Tonga-Hunga ...

A major, 7.0-magnitude earthquake struck in the South Pacific Ocean on Monday ... U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows ...