Sukayu Onsen is an onsen in the Hakkōda Mountains in the city of Aomori, Aomori Prefecture in Japan. It is known for its "Sen-nin-buro" or "1,000-person bath", a large mixed gender public bath.
Wikipedia https://en.wikipedia.org/wiki/Sukayu_Onsen
Official Website http://www.sukayu.jp/
Phone 017-738-2428
Address Japan
Coordinates 40°39'1.045" N 140°51'2.756" E