FILE PHOTO: An aerial view shows Mt. Sakurajima in Kagoshima, southwestern Japan, in this photo taken by Kyodo August 15, 2015. Japan warned on Saturday that the volcano, 50 km (31 miles) from a just-restarted nuclear reactor, is showing signs of increased activity, and said nearby residents should prepare to evacuate. Sakurajima, a mountain on the southern island of Kyushu, is one of Japan's most active volcanoes and erupts almost constantly. But a larger than usual eruption could be in the offing, an official at the Japan Meteorological Agency said. Mandatory credit REUTERS/Kyodo
