Atami Onsen is a hot springs in Atami, Shizuoka prefecture Japan.
Atami Onsen overlooks Sagami Bay on the Izu-Hanto Peninsula, located approximately 60 miles west of Tokyo. [1] There are approximately 500 hot springs in the Atami geothermal spring system. The hot spring system discharges at 20,000 liters per minute [2]
Legend has it that during the Nara Period in 749 A.D., the kami Manmakino kami of Hakone Gongen prayed to Yakushi Nyorai to redirect the hot springs within the ocean inland to the current site of the Oyu geyser, and to later build Yuzen Shrine, thus establishing Atami Onsen. He also brought samples of the water back to Edo. [2]
In the 17th century, Shogun Tokugawa Ieyasu wanted to recreate their alleged healing properties, that he tried to build a similar onsen in Edo (Tokyo). [3] [4]
The geothermal system has been excavated through boring and pump extraction. [5]
Some of the spring sources are hot salt springs or chloride springs. [3] [6]
Yuhara, Kozo. Hydrological Study of Atami Hot Springs (1960)