The name of the lake is derived from the name Mashuko Lake in Ainu language "Kamuy-tou" which means "Lake of the Gods". Thinking that this beautiful lake Kaminokoike must be a gift from the gods, the people who inhabited this land since ancient times have called it "the child of the gods".
Depending on the weather, the water of Lake Kaminokoike has a very mysterious jade green color. The water in the lake stays as low as 8 degrees Celsius throughout the year, which helps the submerged branches not to rot but look like fossils in the green water.
The clear blue lake does not freeze even in winter. Inside the lake, you can see a bright red spotted fish called 'Dolly varden' (a type of salmon family) swimming among petrified trees submerged in the blue of the water creating a Mysterious and beautiful scenery.
The Kaminokoike Lake area was included in the "Akan Mashu National Park" in 2017. It will be visited as an excellent point on the experiential tour from the Uramashu Observatory.