[ 青森県 2泊3日の旅 ]　#3 酸ヶ湯温泉旅館 湯治棟5号館 宿泊記　～ 国民保養温泉地第1号の江戸時代から続く湯治場　混浴大浴場「ヒバ千人風呂」は圧巻です ～

This is my second stay at Sankayu Onsen Ryokan, located at the western foot of the Hakkoda Mountains at an elevation of about 900 meters. Once again, I'm in Building 5 of the hot spring treatment wing—the room with the most charm? (laughs) The spring water is an acidic sulfur spring (containing gypsum, acidic hydrogen sulfide spring), resulting in milky white water. The mixed-gender cypress bath, the Senjin-buro, is packed with day-trip bathers until around evening, but it's much quieter at night, so I recommend staying overnight.