In Indonesia's North Sumatra province, Mount Sinabung, a 2,600-meter (8,530-foot) tall volcano, has erupted several times over the past few days, spewing massive clouds of superheated gas and ash into the sky, and down its slopes in deadly pyroclastic flows. Sinabung has been active off and on since September, following a re-awakening in 2010, after more than 400 years of dormancy. Thousands of villagers and farmers living nearby have been evacuated, hoping to be able to return home soon.