This is a dynamic list of geothermal hot springs (onsen) as geological phenomena in Japan. This list is not for listing commercial establishments such as spa hotels, onsen ryokan, healing centers or other commercial establishments. Japan has many geothermal spring systems as it is located in the Pacific Ring of Fire volcanic area. More than 27,000 hot spring sources exist in Japan, together they discharge over 2.6 million liters of water every minute.