The world's bluest lake, they say. Huge crater lake in Hokkaido, Japan - one of several caldera lakes in the region.

Hokkaido's answer to Oregon's Crater Lake. One of the most beautiful crater lakes anywhere.

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Lake Mashu in the Teshikaga area, is the caldera lake in Akan National Park and Lake Mashu has the reputation of the cleanest lake in the world. It started snowing when I was up there in November 2014, it was cold with the winds blowing at us! I would love to come back again during Spring or Summer and admire the natural beauty and colours of Lake Mashu. Lake Mashu, it's beautiful and tranquil. Converting it into a black and white landscape along with a 2x1 crop, makes this stands out a lot to me and it was one of my few personal favourites!

Lake Mashu, Hokkaido, Japan

摩周湖

A squirrel eating nuts by Koji

2015/09/14

Lake Mashu Hokkaido Japan.

Lake Mashu Japan Hokkaido

This photo was taken on March 11, 2011, the day of the Great Earthquake. About 45 mins later, the quake struck.

Fog flowing over of Lake Mashu in Japan.