SPOT
Cave Old Man Lake
Overview
Lake Toya, which conveys the flow of 110,000 years of time to the present, is a caldera lake that was born from a giant eruption which generated pyroclastic flows approximately 110,000 years ago.
The pyroclastic flow's eruption source collapsed, and "Toya Caldera" was formed, and furthermore, in that hollow, rainwater etc. accumulated, and it is that Lake Toya was born.
Location
Hokkaido Sōbetsu Town
