The Cold War between the U.S. and the U.S.S.R. bro... ..., the Soviets drilled for 14 years, producing the Kola Superdeep Borehole which goes down over seven miles. In actuality,... ...ch goes down over seven miles. In actuality, the Kola Superdeep Borehole consists of several holes branching from one cent... &nb...http://www.neatorama.com/2014/05/08/The-Deepest-Hole-in-the-World/
The Deepest Hole in the World...
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