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In small quantities, it is not dangerous, but on the contrary, it is considered useful. In sanatoriums, therapeutic baths with water from hydrogen sulfide sources are used. And the mud, which is extracted from a similar lake nearby, is considered curative. They say it helps with joint diseases.

In winter, I like this lake more, because of the contrast with the snow. In summer, everything is green - and the water seems a little blue. And in winter it is very beautiful, but cold :)