Yuuka August 22, 2019 Autumn, Spring, Photo Spots, Summer, Winter Breathtaking Panorama Viewpoint of Lake Kussharo in Hokkaido Yuuka August 22, 2019 Autumn, Spring, Photo Spots, Summer, Winter Lake Kussharo is the biggest crater lake in Japan, located in the Akan-Mashu National Park. The sea cloud here is absolutely breathtaking.