The Kola experimental reference superdeep well (SG-3) is the deepest mine working in the world. Has scientific significance. It was part of the system of ultra-deep wells in the USSR. Located 15 km east of the village of Nikel and 12 km west of the city of Zapolyarny .
In 1997, it was listed in the Guinness Book of Records as...
Russian
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Arabic
Romaian
Portuguese (Brazil)
Greek
