Radon lake in the Lopukhinka
In the Leningrad region in the village of Lopukhinka there is an amazing lake with an unusual sky-blue color of the water the radon lake. Rather it is a huge ravine or even several water basins with a depth of tens of meters. Along its bottom runs a small river, Rodica. About the building Lopukhinsky high school slope of the ravine is a sheer cliff, folded limestone. These ancient limestone, of Paleozoic age, you can easily find the remains of fossilized fauna of marine mollusks and even ancient fossils – trilobites. From cracks, splits limestone, flow numerous streamlets of springs that flow into Rudico.
The pond is incredibly clear, at the bottom there is no plants, no plankton, no any other animals. In addition, the lake has healing properties, and next to it you can make interesting discoveries.
Radon lake are artificial in origin, formed by the construction of 2 dams in the upper reaches of Radici — the length of the upper lake is about 200 meters, 50 meters — lower lake length of 550 meters, a width of 40-60 meters.
In the early XX century on the sources feeding the lake Lopukhinsky, drew the attention of renowned hydrogeologist N. F. Cellars. He found that their heavenly color of a pond obliged the chemical element Radon, which is contained in the waters feeding the lake source. That’s why the lake is there is no life and it has healing properties. As is known, the presence of radon in water inhibits the growth of plankton and plants.
Radon is a colorless, inert radioactive gas that seeps out of the ground and mixes with groundwater. The major share of the background radiation of the planet created by natural sources of radiation — about 87% of the radiation we receive from nature, of which 32% gives radon. Dissolved at a concentration of up to 60 Bq/kg the gas is not dangerous, in fact radon is the traditional method of water treatment. While taking a medicinal bath radon contributes to the elimination of chronic inflammation, reduce pain and deepen sleep.
In the ancient Paleozoic deposits of the Leningrad region is known for water with low radioactivity. This Cambrian mineral water from drilling hole Sestroretsky resort. They possess valuable therapeutic properties and are widely used. The radon lake in the Lopukhinka by the decision of Leningrad region Executive Committee dated 29 March 1976 under the protection of the state.
The healing properties of radon lakes were assessed in the nineteenth century, in 1841 Paul Khristianovich Goering — the owner of the estate and the estate Lopukhinka since 1833 — was opened the resort with a chain of spas. The manor is known since the XVIII century, it belonged to the genus Lopukhins that gave the name and the estate and around the village.
In addition, the surroundings of Lopukhinka, due to the lakes and a large number of sources often attracted the attention of researchers and doctors. In 30-ies of the last century the Lopukhinka was rented by the famous Explorer Admiral Thaddeus Bellingshausen Faddeevich. Being in 1839 as military Governor of Kronstadt, he along with the famous surgeon N. I. I. Pirogov organized in the Lopukhinka hospital for sailors, in which patients with rheumatic fever treated water from local sources. The treatment consisted in the fact that the patients were wrapped with sheets, moistened with water from springs. It gave positive results. The hospital building remain to this day, now there is Lopukhinsky secondary school.
In the twentieth century Radon near the lakes was arranged a trout farm, fish produced in open water, so these places attract fishermen. In 1994 the area was declared a hydrogeological monument of nature of local value.
At present the Radon potential of the lakes is not used, a trout farm in ruins. The Lopukhins ‘ estate is in ruins, the stories of the residents it was restored several times, but after the second fire is not restored. About Radon lakes almost forgot, but this does not prevent to enjoy their charming beauty.
Radon shore of the lake is surrounded by a picturesque canyon, the expanse of which you can feel like a real hunter of antiquities. If a good search, you can go home with a sack full of fossil clams, trilobites and Ammonites.
How to get to radium lake in the Lopukhinka: train from the Baltic station to the station of Old Peterhof then bus to Koporye, Globitsy to Lopukhinka.