Indonesia’s restless volcanoes rocked by more eruptions

This is the second time that Merapi, Indonesia’s most active volcano, has erupted this month. The earlier eruption was slightly larger and a massive ash and sand cloud from the eruption coated Yogyakarta and neighboring city Solo with grey dust and forced an airport closure. The mountain’s last major eruption was in 2010. More than 300 people were killed and 280,000 residents had to be evacuated. Indonesia sits on the so-called “ring of fire” where the collision of the Earth’s tectonic plates causes frequent quakes and major volcanic activity. Indonesia has nearly 130 active volcanoes alone.  –DW

Ibu volcano, located along the NW coast of Halmahera Island, is a stratovolcano with a truncated summit and a number of large nested summit craters. The inner crater, 1 km wide and 400 m deep, contained several small crater lakes through much of historical time. The outer crater, 1.2 km wide, is breached on the north side, creating a steep-walled valley. A large parasitic cone is located ENE of the summit.  –Volcano Discovery