The Kola Superdeep Borehole, although only 9 inches in diameter ... World's top 5 national parks to see the coolest wild animals Why delve so deep into the Earth's crust? According to Dr. Ulrich ...

Deep in the Arctic Circle, in Russia, lies the deepest hole ever dug which was once called 'the entrance to hell'. The Kola Superdeep Borehole is the deepest manmade hole, and deepest artificial ...

Scientists now know how to drill deep enough to tap into an energy supply that would power the world for more than 20 million years if we capture just 0.1 percent of it.

Shenditake 1 now stands as the world's second deepest drilling well. n-tv reports that the deepest borehole remains the Kola Superdeep Borehole, located on the Kola Peninsula near Russia's border ...

Here's how deep humans have dug underground ... Mponeng in South Africa is the world's deepest gold mine. The Kola Superdeep Borehole is only 9 inches wide. Russian scientists have been drilling ...

Here's how deep humans have dug underground ... Mponeng in South Africa is the world's deepest gold mine. The Kola Superdeep Borehole is only 9 inches wide. Russian scientists have been drilling ...