Villagers walk on a road as Mount Sinabung volcano spews smoke, as seen from Suka Nalu village in the district of Tanah Karo, in Indonesia's North Sumatra province, September 2, 2010. Thousands of Indonesian villagers evacuated when the volcano erupted for the first time in four centuries returned home on Tuesday, but officials said it was uncertain whether the threat from the volcano had passed. REUTERS/Beawiharta (INDONESIA - Tags: DISASTER ENVIRONMENT IMAGES OF THE DAY)