Lake Usori
宇曽利湖
A volcanic caldera lake within a sacred mountain site, known for its acidic waters and unique species of dace fish.
What it is
- A caldera lake formed by the eruption of Mount Tsurugi on the Shimokita Peninsula.
- Part of the Shimokita Hanto Quasi-National Park and the Mount Osore sacred site.
- The official name registered by the Geospatial Information Authority of Japan is Lake Usoriyama.
- A highly acidic body of water with a pH level of approximately 3.5.
What to see
- Hydrogen sulfide gas erupting from the bottom of the lake bed.
- Hot springs and volcanic gases located on the northeastern shore.
- The Shozu River, which serves as the only river flowing out of the lake.
- A unique species of dace fish adapted to live in acidic water.
Notes written by Japan Gems from facts in Japanese Wikipedia.
Where it is
Lake Usori Open in Google Maps
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