Photos by Michael Yamashita yamashitaphoto / Staying warm in Ibusuki Onsen, Kagoshima, Japan. This hot spring town is famous for its "baths": customers are buried up to their necks in volcanic sand, heated by natural steam beneath the beaches' surface. About 20 minutes is all you can take before heading for more traditional spa bathing pools. #Ibusuki #Kagoshima #Kyushu #Japan #sandbath #hotspring