A man walks in Karo on Sumatra island as Mount Sinabung spews volcanic ash on November 1, 2016. Mount Sinabung is one of the 129 active volcanos in Indonesia situated on a quake-prone zone of "the pacific Ring of Fire." Sinabung roared back to life in 2010 for the first time in 400 years and after another period of inactivity it erupted once more in 2013, and has remained highly active since. (Photo/Agencies)
