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.
Those who get a chance to do this wind up smiling all day, energizing them for the entire week. If they had suffered from headaches or other maladies they will be gone. The locals just can’t seem not survive the winter without swimming in it’s crystal clear waters. The water is know to have miraculous powers and is world renowned . Its muds which are considered to be therapeutic are used in many health resorts throughout Tatarstan. It has even been speculated that it contains of an active radon which is beneficial in this form.