The Sakantsy forest lake, more than 20 m deep, completely went underground in the Vyaznikovsky district of the Vladimir region.
The head of the department of water resources and water use of the regional administration, Ivan Shaposhnikov, told reporters about the unique natural phenomenon.
He explained that this happened due to karst formation processes taking place in the area.
“As a result of the erosion of the soil, voids were formed into which water went along with the fish. It is still impossible to say what will happen to the lake next.
There is a possibility that the site of the failure will be flooded and the lake will be restored again. Currently, there is only a funnel in place of the lake,” the specialist said.
Shaposhnikov clarified that the lake was located not far from the Pivovarovsky failure, a similar karst sinkhole that formed in 1959.
A sinkhole is a sinkhole of natural origin. A sinkhole occurs when groundwater erodes soil and rocks, causing the ground to fall into the resulting void.
In place of the reservoir, only a funnel with a muddy bottom remained.
Experts believe that the water went underground due to voids caused by soil erosion.
We are talking about karst formation, when rocks containing silt pass through aquifers, and then they are washed away, and voids are formed. This sometimes causes such failures, reports the 360 TV channel.
The lake was located near the famous Pivovarovsky failure, which was formed in 1959 and was a hole the size of a nine-story building. Now it is overgrown with trees.
However, environmentalists did not see anything surprising in the failure. Due to the geological features of these places, such failures often occur in the Vyaznikovsky, Murom and Gorokhovetsky regions.
Perhaps the lake will recover, but it is still impossible to say for sure what will happen to the reservoir next.
In the Sobinsky district, a lake also went underground for 15 years. It stood without water for five years, and then filled up again. The same story happened in Gus-Khrustalny. No one can explain these processes. Moreover, he does not undertake to investigate: drilling can only aggravate the situation. Such failures can appear anywhere.
Residents of the village of Nikolichi, Kungur district, Perm region, discovered dried, cracked earth on the site of the forest lake Peshchera. There was neither water nor fish living in this reservoir. There was only a small gap left, leading deeper into the earth. Apparently, Lake Cave flowed there.Together with a specialist from the Ostashat House of Culture, Olga Kolyvanova, who contacted the editorial office of the local newspaper Iskra, we are driving along a forest road to the disappeared lake. It is a kilometer from Nikolichi.
- A neighbor told me that the lake had disappeared. He says it was still there at the end of April. I went into the forest on May 9, and in its place there was a puddle and a small sinkhole,” says Olga Stanislavovna. - It's creepy. They've been fishing there all their lives. And with a fishing rod and nets. And then suddenly it just disappeared. Why suddenly?Where did the Cave go?
We go down to the lowland and follow along a small ravine. In the spring, melt water rushes along it and fills the depression, shaped like an elongated comma. Now in place of Lake Cave there is a large bright spot, a “bottom” cracked in the sun. Judging by its outline, the length of the reservoir reached 80 meters. Near the shore from the side of the forest you can see a small dip and a narrow hole one and a half meters from the surface, through which, apparently, the lake disappeared, dragging all the aquatic fauna with it. About ten kilometers from the disappeared lake there is the entrance to the Zuyatskaya cave, which is considered one of the largest in the Perm region. Its length is 1410 meters. It is notable for its underground lake at the entrance and a stream. Some passages are completely flooded. Water levels are subject to significant seasonal fluctuations. Maybe the resulting ponor (the place through which the water left) is the entrance to another cave?
Why did the bottom “crack”?Local residents are speculating. One version is that it was influenced by an earthquake in the Sverdlovsk region with a power of 4.1 points at the epicenter, which happened last fall on the night of October 19. Iskra talked about this on October 20 in the article “Tremors”. Judging by statements on social networks, the vibration was felt not only by residents of the Sverdlovsk region, but also of the Perm region. It also shook in Nikolichi. Perhaps this soil vibration led to the formation of a crack at the bottom of the reservoir? Another version is the activities of oil workers. In the neighboring Berezovsky district, oil is being extracted from the ground. Voids are formed.
There are losers all aroundThe residents' unrest about the disappeared lake is understandable: the villages are located on karst. Sinkholes, as the locals call small karst sinkholes, are a common occurrence here. But the disappearance of an entire lake is a reason to be wary. The only source of water supply for the villages is Lake Lyubimovo. True, it is located on the opposite side of the collapsed lake - three kilometers from Ostashat. About half a kilometer away, Lake Worms went underground about ten years ago. Then the hole was filled with stones and clay. And in the spring the cavity filled with water again. Residents, of course, are concerned whether similar cases of disappearance of miraculous reservoirs will become a pattern. In Ostashaty and Nikolichi, the benefits of civilization include electricity and water supply serviced by the local collective farm. A lopsided 30-meter pipe stuck into the ground is a water tower. The pump forces liquid into it from Lake Lyubimovo, then through the water supply network it enters the houses. The village of Nikolichi, which is located on a hill, has had poor water supply since the beginning of the gardening season: there is not enough pressure. In the village itself there are several long-standing karst sinkholes that are filled with precipitation in the spring. The lakes are protected. Periodically cleaned of mud. They don't let livestock in and don't rinse clothes. The water in them, relatively speaking, is for drinking. There are no other sources of drinking water.
A comment
Researcher at the stationary laboratory of the Mining Institute of the Ural Russian Academy of Sciences Natalya Lavrova:- It’s difficult to draw any conclusions now. The opening of a crack or hole through which water escaped could have occurred either as a result of man-made impact or due to natural causes. I do not rule out that there may be a cave under the lake. We haven't visited the site yet. Over time, the ponor should be covered with clay and earth. After some time the lake may return.
A lake in Tunisia appeared in 1 day. A phenomenon in the desert.If in our Perm region the lake disappeared in one night, then in Tunisia the lake appeared in one day. Aren't these wonders of nature?
In Tunisia, a lake appeared in the center of the desert. A large expanse of turquoise water appeared in the Tunisian desert in just 1 day, in a place where there was nothing but hot sand. This phenomenon lake was discovered by shepherds. It is believed to be up to 18 meters deep and covers one hectare. Local geologists suspect that the reservoir arose due to seismic activity, perhaps a rupture occurred above the groundwater level, which opened the passage of liquid to the surface of the rock. Hundreds of local residents have built a beach and are enjoying this miracle in an area where they have always sweltered from the heat. However, water may contain chemical impurities of phosphates, which can be harmful to human health, but so far this has not stopped anyone.
In the Vyaznikovsky district, the forest karst lake Sakantsy near the village of Pivovarovo went underground. A video of a disappeared reservoir, with only silt remaining at the bottom, was published by community "Vyaznikovsky offroad"
“On October 12, 2017, at 1:30 p.m., a failure occurred in the village of Pivovarovo on Lake Sakantsy. All the water went away with the fish." - this caption accompanies the video.
According to the Internet portal telling about the life of the two cities of Vyazniki and Gorokhovets, Yaropolch.ru, the karst lake Sakantsy was located approximately 40 meters from the famous Pivovarovsky failure, formed in 1959. The Pivovarovsky failure itself, according to the testimony of old-timers, is a pit in the middle of the forest, into which a nine-story house could fit. Now the slopes of the failure are overgrown with trees
As Alexey Migachev, director of the department of environmental management and environmental protection of the administration of the Vladimir region, explained to Zebra TV, it is not surprising that karst sinkholes form in the Vladimir region, especially in the Vyaznikovsky, Gorokhovetsky and Muromsky districts. This is due to the specifics of geological processes in these territories.
“Karst formation is underway. That is, aquifers pass through some rocks containing silt, they are eroded, dissolved and voids are formed. In some places, strata form close to the surface and similar sinkholes are formed. These processes have been going on for decades, with no sudden collapses occurring. And in this place, a void has already formed under this lake, there is about two meters of silt that held water. But, apparently, after the rains these processes became more active, and the silt in some place simply subsided, and the water flowed away like into a funnel.
What will happen to this next - different points of view are expressed. There were cases when these lakes appeared again. The point is that the sinkhole can become silted, and then again it can become a place where water accumulates. But the lake may not recover.
In the Sobinsky district, a lake also went underground about 15 years ago. It stood without water for 5 years, and then filled with water. There was such a story in Gus-Khrustalny. Nobody knows why this happens. Because if you start research, start drilling the surface, the situation may get worse.
Such failures can form anywhere throughout the entire territory, especially in the Vyaznikovsky, Gorokhovetsky and Muromsky districts. There is active formation of karsts there,” - Alexey Migachev explained to Zebra TV.
By the way, it was the karst terrain, prone to failures, that was the most powerful argument against the construction of a nuclear power plant near Murom in the Navashinsky district of the Nizhny Novgorod region. However, this did not prevent the authorities from approving this particular site for the construction of a nuclear power plant.
“According to geologists, karst lakes go underground due to the dissolution of rocks by underground and surface waters. In the case of Lake Sakantsy, the water was retained thanks to the muddy bottom, which played the role of a plug between the lake and the underground river flowing at a depth of 80 m.
In addition to Vyaznikovsky, karst processes cover Kameshkovsky, Kovrovsky, Gorokhovetsky, Muromsky, Selivanovsky, Sudogodsky, Melenkovsky and Gus-Khrustalny districts,” - explained later
