Panicked hikers were caught on video scrambling down the side of an Indonesian volcano that suddenly erupted in front of them, sending a plume of ash thousands of feet into the air.

The stunning footage — captured by a drone on August 17 — shows a group of about a dozen hikers cresting the rim of Mount Dukono when the mammoth cloud of gas and ash rolls toward them with hair-raising speed.

They quickly start rappelling down the side of the steep cone, dropping quickly in a mad dash for their lives.