Aomori | Osorezan Crater Lake---Lake Usori Gokurakuhama

✓ Lake Usori Gokurakuhama

Osorezan, one of Japan's three sacred mountains, is an active volcano with an elevation of 879 meters. The crater lake of Osorezan is called "Lake Usori," and its water, formed over years near the volcanic crater, is a stunning emerald green, reminiscent of Okinawa's beaches.

However, swimming is strictly prohibited as the lake's water is highly acidic. Upon closer inspection, you can even see carbon dioxide bubbles rising to the surface. While visitors can stroll along the white sandy paths by the lakeshore, entering the water is forbidden.

The breathtaking scenery of Lake Usori's beach, combined with the stark contrast of Osorezan, has earned it the name "Gokurakuhama" (Paradise Beach). Due to the lake's extreme acidity and harsh living conditions, only "Japanese dace" fish can survive in its waters.

Post by Moutain | Jul 31, 2025