The Deepest Hole People Ever Made
In northwestern Russia, on the Kola Peninsula, there's a metal cap covering a hole that scientists dug 7.5 miles down. Here's the story of the Kola Superdeep Borehole project.
In northwestern Russia, on the Kola Peninsula, there's a metal cap covering a hole that scientists dug 7.5 miles down. Here's the story of the Kola Superdeep Borehole project.