The art of ice “Ice Bubbles”. A phenomenon in which gas developed from the bottom of a lake is trapped in the ice frozen within the lake. It can be seen at Lake “Onneto” located at the westernmost point of Akan Mashu National Park in Ashoro Town.

Winter only! The Miracle Flower is a crystalized flower created by nature called “Frost Flowers”. A phenomenon that does not appear unless conditions such as temperature -15°C, windless, and snowless atmosphere. It can be seen at Lake “Onneto” located at the westernmost point of Akan Mashu National Park in Ashoro Town.

Onneto, a beautiful lake with a circumference of 2.5 km, is located at the westernmost tip of Akan Mashu National Park in Ashoro Town, at the foot of Mt. This mysterious lake changes its color from clear blue to emerald green to dark blue depending on the season, weather, and viewing angle.

Onneto, a beautiful lake with a circumference of 2.5 km, is located at the westernmost tip of Akan Mashu National Park in Ashoro Town, at the foot of Mt. This mysterious lake changes its color from clear blue to emerald green to dark blue depending on the season, weather, and viewing angle.