It is uncertain that Lake Tazawa is the site of a caldera volcano. However, the lake is surrounded by outer ring mountains at the same altitude, but the bottom of the lake is lower than the sea level. It means that the bottom of the lake is the same or more deep from the surface of the lake to the height of outer ring mountains. It is a mystery where the volcanic product of such a volume were accumulated, so it has not ever been confirmed that Lake Tazawa came from caldera volcano or not.
The lake is so acidic that few fish live in it by drawing in the strong acidic hot spring water artificially. The moment the young girl realized her beauty, she realized that she would grow older. The water of the fountain that she drank according to a message from God to keep her good looks turned her into a dragon, from which the name of Lake Tazawa came. I was convinced by this legend when I looked at the lake that showed the mysterious blue gradation.
Panoramic view
A little break for lunch on the beach
