There is an amazing place in the suburb of Kazan, which is a favorite destination for those visiting Kazan. One can swim in this lake year round, many locals visit it in winter to experience it’s healing effects. The reason for this is it’s high levels of hydrogen sulfide in ts water.
The depth of the lakes from 2 to 17 m or more, and the nature that surround the lakes is truly amazing. All together make up a single unique complex, it’s like a bit of heaven on Earth. Due to the constant inflow of spring water in the lake it has fantastically good visibility for a freshwater reservoir. Depending on the time of the year, the color changes from azure in summer to nearly black in winter.
The slopes of the coast under water are covered with dense thickets of Elodea. Due to low temperature all year round, the fauna in the lakes is scarce but they are home to many very rare species, included in the Tatarstan’s Red Book, like water scorpion and planarians.
The lakes are well-known and drew attention early in the 19th century. The water’s unique formula and healing qualities were studied and described by the famous scientist and doctor Carl Fuks.