Yugama (Boiler), Gunma

“Yugama” is the popular tourist attraction in Kusatsu highlands, and one of the crater-lakes which was made by the eruption of the volcano Shirane (2,160 meters high). Its diameter is 300 meters, depth of water is 30 centimeters, water temperature is around 18 degrees, and calmly filled with the beautiful emerald green water.

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It is said that it is the strongest acidic lake (PH1.20) in the world and fish cannot live in such extreme acidity water. In addition, because of a lot of volcanic ashes, viscosity is strong and the quality of the water is very thick. Of course you cannot swim in here. If you enter inside of it, you gradually oxidized and begin to dissolve without being able to move.

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However, the contrast of the white face of the mountain keeping out the plants and the surface of the emerald green produce mysterious atmosphere.

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But, as of September, 2016, “the Yugama visit course” is forbidden to come in by raising Mt. Shirane’s volcanic alert level.

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Information

Name:Yugama (Boiler)
Adresse:Kusatsu-Shiranesan Kusatsu-cho Agatsuma-gun, Gunma 377-1711 Japan
Access:JR Agatsuma-sen line "Naganohara Kusatsuguchi-eki Station” (Approximately 1 hour by bus)
Tel:(+81)279-88-0800 (Kusatsu Hot Springs Tourism Association)
Official site:https://www.kusatsu-onsen.ne.jp/


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