Kola: The World’s Deepest Hole

During the Cold War, the Space Race captured public attention, but a quieter, equally ambitious race unfolded underground. The Soviet Union’s Kola Superdeep Borehole became the deepest human-made hole on Earth, a scientific feat often overlooked in history. This episode explores that parallel competition, the engineering challenges of drilling into unknown crust, and the surprising discoveries that emerged when humanity turned its gaze downward instead of up.