Indonesia’s rumbling Mount Lewotobi Laki Laki has erupted twice and sent clouds of searing gas miles into the sky while tons of ash fell on villages and flights were cancelled.

The ash cloud above Mount Lewotobi Laki-laki on Monday was about four times taller than the one produced by an eruption there last month.

Indonesia’s Geology Agency recorded an avalanche of searing gas clouds mixed with rocks and lava traveling up to 3 miles down the slopes of the 5,197-foot mountain. Observations from drones showed lava filling the crater, indicating deep movement of magma that set off earthquakes.