Lake Tazawa田沢湖[ Tazawa ko ]

Lake Tazawa Lake Tazawa (田沢湖, Tazawa-ko) is a caldera lake in the city of Semboku, Akita Prefecture, northern Japan. It is the deepest lake in Japan at 423 metres (1,388 ft). The area is a popular vacation area and several hot spring resorts can be found in the hills above the lake. Akita Prefecture's largest ski area, Tazawa Ski Area, overlooks the lake.

from Lake Tazawa (Wikipedia) CC BY SA 3.0