#man-made
science What is the deepest man-made hole on Earth?
The deepest man-made hole on Earth is the Kola Superdeep Borehole, located in Russia. It was drilled by the Soviet Union in the 1970s and 1980s and... Read more
The deepest man-made hole on Earth is the Kola Superdeep Borehole, located in Russia. It was drilled by the Soviet Union in the 1970s and 1980s and... Read more