Mine Onsen, also known by the name of the public bathhouse facility, Odoriko Onsen, is a geothermal hot spring located in Daifunto park, Kawazu, Shizuoka Prefecture, Japan.

[1] Mine Onsen is part of the Kawazu hot spring system.

The mineral water is high in sodium chloride and sulphur; it emerges from the source at 143°F (61.6°C).

[2] There is a geyser onsite, which erupts regularly, shooting water into the air at 200°F.

[3] Thermus thermophilus bacteria has been isolated in the hot spring water.