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The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
The Soviet Union had, in fact, drilled a hole more than 12 km (7.5 miles) deep, the Kola Superdeep Borehole, located not in Siberia but on the Kola Peninsula, which shares borders with Norway and Finland. Upon reaching the depth of 12,262 m (40,230 feet) in 1989, geological anomalies were found, although they reported no supernatural encounters ...
In terms of depth below the surface, the Kola Superdeep Borehole SG-3 retains the world record at 12,262 metres (40,230 ft) in 1989 and still is the deepest artificial point on Earth. [ 4 ] Hollow Earth
Kola Superdeep Borehole, Russia [96] Deepest borehole by depth below sea level: 11,944 m (39,186 ft) (10,685 m well at 1,259 m deep seabed)
The Kola Superdeep Borehole broke the world record for greatest depth drilled into the Earth, reaching 31,441 feet (9,583 m) to break the mark set in the U.S. in 1974 by the "Bertha Rogers hole" in Washita County, Oklahoma. Drilling would cease in 1989 at a depth of 40,230 feet (12,260 m) which has not been exceeded since. [38]
The Kola Superdeep Borehole on the Kola peninsula of Russia reached 12,262 metres (40,230 ft) and is the deepest penetration of the Earth's solid surface. The German Continental Deep Drilling Program at 9.1 kilometres (5.7 mi) has shown the earth crust to be mostly porous.
The plan is to usher in a hybrid design, first using conventional rotary drilling technology developed by the oil and gas industries to cut through Earth’s surface layers.
Kola Superdeep Borehole; P. Project Mohole; S. Sakhalin-I; San Andreas Fault Observatory at Depth This page was last edited on 4 June 2015, at 15:45 (UTC). ...