Photo taken on Feb. 24, 2016 shows volcanic smoking and ashes rising from Mount Sinabung during an eruption in Karo, North Sumatra, Indonesia. Authorities have repeatedly called on local residents to remain patient in dealing with the impact of Sinabung's eruptions, which some experts have predicted will continue for five more years. (Xinhua/YT Haryanto)

Residents watch volcanic smoking and ashes rising from Mount Sinabung during an eruption in Karo, North Sumatra, Indonesia, Feb. 24, 2016. Authorities have repeatedly called on local residents to remain patient in dealing with the impact of Sinabung's eruptions, which some experts have predicted will continue for five more years. (Xinhua/YT Haryanto)

Indonesian students wear masks during an eruption of Mount Sinabung in Karo, North Sumatra, Indonesia, Feb. 24, 2016. Authorities have repeatedly called on local residents to remain patient in dealing with the impact of Sinabung's eruptions, which some experts have predicted will continue for five more years. (Xinhua/YT Haryanto)