At least 24 flights to and from the Indonesian resort island of Bali were cancelled on Monday after an eruption of the Mount Lewotobi Laki-laki volcano belched volcanic ash 11 miles into the sky, officials said.

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.