The Kola experimental reference ultra-deep well (SG-3) is a unique object of scientific research, located 15 km east of the village of Nikel and 12 km west of the city of Zapolyarny in the Murmansk region. This hole, first drilled in the 1970s, became the deepest mine in the world. Listed in the Guinness Book of Records in 1997 as the deepest huma
Interesting places #скважина
Geotags 1