Kola Superdeep Borehole
kola-superdeep-borehole-1752994512746-fa9562
Description
The Kola Superdeep Borehole SG-3 is the deepest human-made hole on Earth, which attained maximum true vertical depth of 12,262 metres in 1989. It is the result of a scientific drilling effort to penetrate as deeply as possible into the Earth's crust conducted by the Soviet Union in the Pechengsky District of the Kola Peninsula, near the Russian border with Norway.
ID: kola-superdeep-borehole-1752994512746-fa9562
