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The deepest man-made borehole in the world is the Kola Superdeep Borehole (Russia, 1989) at 12,262 meters (7.6 miles). The deepest natural ocean depth is about 6.8 miles (11000 meters), in the Marianas Trench near Guam.

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14y ago
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14y ago

The deepest man-made hole in the Earth is located in the Kola Peninsula in northwestern Russia. The depth achieved from the surface was 12,262 meters, roughly 7.5 miles. The 9" bore hole was created by a rotating bit spun by the pumping of drilling mud. Unexpectedly high temperatures caused the stoppage of the drilling in 1994, 24 years after drilling was started. The goal of the Russians was to drill to the Moho, the boundary between the crust and the mantle, but the goal was not reached.

See the link below for additional very interesting information on the project.

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11y ago

The deepest hole in the world is in Mexico and is miles deep. If you find this help full check my YouTube channel. http://www.youtube.com/user/MrAdrian65150/videos

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15y ago

The deepest point in any ocean is the Mariana Trench (aka Challenger Deep) in the western Pacific Ocean at 11,033 metres deep.

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9y ago

The Kola Superdeep Borehole is a man made hole that is the deepest on earth. In 2007 it reached a depth of 40,230 feet or 12,262 meters. It is located in Russia on the Kola Peninsula.

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12y ago

It would be in Russia on there Kola Peninsula. It is about 40,000 feet deep. They have been drilling since the 1970s.

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13y ago

Ummm.......lets say "why dont u go explore it and tell us?"

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10y ago

The deepest hole drilled into the crust of the earth is 7 miles (12 km.) deep. The hole is on the Kola Peninsula in the USSR

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