triggering a flash flood and a cold lava flow from Mount Merapi. Cold lava, also known as lahar, is volcanic material like ash, sand and pebbles carried down a volcano's slopes by rain.

A series of strong pyroclastic flows were released from the actively growing lava dome in the inner summit ... villages and nearby towns, she said. Mount Merapi has seen increased volcanic ...

YOGYAKARTA--Indonesia’s Mount Merapi erupted Sunday, spreading searing gas clouds and avalanches of lava down its slopes as other active volcanoes flared up across the country, forcing the ...