In the late 80s of the last century, geodesists developed a well, the peculiarity of which was that it was much deeper than any other point on Earth.
It is deeper than the Mariana Trench. The specialists planned to get to the planet’s mantle, but for some reason the work was suspended. In historical archives, there are references to the fact that at maximum depth, employees clearly heard sounds.
The surveyors reached the parameter of seven thousand meters without any problems. The equipment easily pierced granite, but then the difficulties associated with the high hardness of the rocks began.
The well began to slowly crumble, the equipment fell into the voids. She became the center of attention. When the depth crept up in revenge of 9.5 thousand meters, about fifteen laboratories worked on the well. This project was of paramount importance for the Soviet people.
Having reached a depth of 12,000 meters, the scientists determined that the temperature in the well had risen to over two hundred degrees Celsius.
Further, strange sounds began to be heard from the abyss. This was the reason why the work was frozen, and soon the project was completely forgotten.