Yes, it was in the 80s... I was sitting in a trailer with an Angara walkie-talkie (a 20 kg suitcase) and 3 times a day I transmitted the temperature, level and chemical composition of this lake to the South Karakum expedition. And my dear Max Ruvimovich (peace be upon him) was building curves for earthquake forecasting. The lake is at the bottom of a fairly large cave: the depth from the main entrance is 65 meters, the width is 50 meters, the height is 26 meters. The water temperature is sometimes up to 37.5 degrees. The water is very therapeutic, the main therapeutic component is hydrogen sulfide, well, iodine. Any wounds heal quickly. And vapche is very good for the skin, it rejuvenates better than any hyaluronic acid. Here's a first-hand account. I had a cold in winter, my mother made an iodine net. I was working on the lake in the summer. It is clear that for half a year there has been no trace of the iodine grid. I got into the water and sat for 10 minutes (no longer recommended) And I'm getting out. The people are in awe, Nikita, the net has appeared on your back! So, after half a year, all that was left in the pores of the skin was kicked out by the water. Can you imagine what kind of bioactivity? They say in the Middle Ages, even lepers received relief here... Well, in order to understand what kind of babble is around, I attach several photos. Well, the question to fill in, who will find my wife in the photo is well done!
A unique natural phenomenon is the Baharden underground lake. A long descent in a rocky cave leads to a small rocky beach. In front of you are rocky vaults above a warm underground lake.