支笏湖の秘湯、丸駒温泉へ。支笏湖は深さ日本第2位(360m)、水量日本第2位(琵琶湖の3/4)、日本最北の不凍湖。まるで海のように大きいが、景色は湖。 To Marukoma Onsen, a secret hot spring on Lake Shikotsu. Lake Shikotsu is the second deepest lake in Japan (360m), the second largest water volume in Japan (3/4 of Lake Biwako), and the northernmost ice-free lake in Japan. I…