Indonesia’s rumbling Mount Lewotobi Laki Laki erupted on Monday, sending a column of volcanic materials as high as 18 km into the sky and depositing ash on villages. The volcano has been at the highest alert level since last month and no casualties were reported.

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.