Rumbling Mount Sinabung on the Indonesian island of Sumatra shot billowing columns of ash more than 5,000 meters (16,400 feet) into the atmosphere and hot clouds down its slopes on Monday.
Rumbling Mount Sinabung on the Indonesian island of Sumatra shot billowing columns of ash more than 5,000 meters (16,400 feet) into the atmosphere and hot clouds down its slopes on Monday.