Russia🇷🇺, Kabardino-Balkaria, Shadkhurei Lakes

The Shadhurei Lakes are as beautiful as they are mysterious and dangerous. If you look at the place where they are from above — 2 water mirrors look like eyes. This place is shrouded in secrets and legends. Elements of mystery and mysticism combined with beautiful landscapes and clean mountain air make the Shadhurei Lakes an interesting place for travelers.

Shadhurey Lake has many secrets. For example, the water level in them does not change — and this is a mystery for scientists. After all, neither rivers nor streams flow into lakes and do not flow out of them. Perhaps the level is maintained by underwater sources. The water temperature does not change much during the year and never exceeds +10...+15 °C. So swimming in the lakes will not work. But fishing is quite enough.

Lakes Bolshoy and Maly Shadkhurey were formed as a result of karst failures. It is known for certain that they are deeper than 200 m.
https://earth.google.com/web/search/Shadkhurey