Three hikers in Indonesia have been killed in an explosive volcanic eruption that sent ash and volcanic rock 32,000 feet in the air. Authorities say the group scaled the volcano despite a hiking ban.

Rescue crews are searching for several hikers who are feared dead after a massive volcanic eruption in Indonesia.

Satellite footage released by the Cooperative Institute for Research in the Atmosphere (CIRA) shows an ash cloud being released into the atmosphere as Mount Dukono erupted.