What's in the deepest hole in the world?

In 1970, Soviet scientists began digging a deep cola well in Murmansk, Russia, where they wanted to conduct research on the crust of the earth, and they wished to overcome the American scientists who abandoned such a project in 1966.
Dig the deepest hole in the world

After 24 years of strenuous drilling, drilling was halted in the cola well in 1994 after reaching the depth of 12262 meters, and the lower well diameter is only about 22 cm, which is the deepest hole in the world.

But even though they are deeper drilling, they are not the longest; In 2008, an oil well got this title but it was not deep in the pit, and a cola well reached 0.2% of the total distance of the center of the Earth.

Scientists at the bottom of the pit found a large amount of water, which is believed to be the oxygen and hydrogen atoms that come out of existing metals. In the rocks, they have also found fossils of plankton at a depth of 6,700 meters as well as the atmosphere of the pit is very hot and temperatures reach over 177 °c.