In this land, temperatures reach 330 degrees Fahrenheit [330 ° C]

The Soviet Union in 1970 approved the earth's deep - deep drilling plan without any specific goal. The plan was to drill as much as possible.

The Kola Peninsula was designated a drilling site, and with the help of this experiment Russian scientists wanted to get acquainted with the conditions that reign in large depths, the chemical composition of the earth, its physical characteristics, and what temperatures rule there.

To succeed, the Russians invented many instruments and tools - not only for drilling the earth but also for measurements so deep.

The largest hole they managed to do is 12,226 feet [12,226 m], and this until 2008 remained the deepest drilling ever attributed to the human hand, knowing it is deeper than the Pacific Ocean.

The Russians, however, were not satisfied. Their goal was to dig a hole of 15 miles [15 km] to the end of 1993, but this was prevented by high temperatures. In depth of 12 miles [12 km], scientists waited for temperatures of 100 degrees Celsius, but it was also 80 degrees higher.

According to this data, the Russians estimated that the temperature of 15 miles [15 km] of depth is at least 330 degrees Celsius, meaning that their mechanism will not work and melt like plastic. In addition to temperatures, they were surprised at the discovery of deep water that was thought to be completely dry.

Exploration in various regions continued until 2005, as research ceased in 2008, when the entire complex was abandoned.