Kola Superdeep Borehole: A Journey to the Deepest Hole on Earth

In a desolate corner of the Arctic, amid the ruins of an abandoned industrial structure, lies a steel plate secured by twelve thick bolts. The opening it covers measures just 9 inches in diameter. Yet beneath it, a vertical shaft plunges 40,230 feet into the continental crust. The Kola Superdeep Borehole was not designed to […]