Visit Tazawako, Tohoku
Lake Tazawa-ko is a crater lake which at 423.4 meters in depth is the deepest in Japan.

Lake Tazawa
Lake Tazawa-ko is a crater lake which at 423.4 meters in depth is the deepest in Japan.
Surrounded by a gentle range of hills, which provide the lake with a bright atmosphere, the almost perfectly circular lake is filled with superbly clear sapphire-blue water, inviting us to sink below its surface.
Other places within Tohoku