Soviet scientists embarked on an ambitious project to drill as deep as possible into the Earth’s crust. The result was the Kola Superdeep Borehole, located in the remote Pechengsky District of ...

America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth. Since the early 1960s, scientists have attempted to drill down to the Earth's mantle. It took 20 years ...