The Kola Superdeep Borehole, dug during the Cold War, remains the deepest hole ever made by humanity. In this video, we explore the science, history, and fascinating discoveries behind this incredible ...

The official name for the so-called "well to hell" is the Kola Superdeep Borehole SG-3 – but that's not as catchy. It's currently the deepest man-made hole on Earth, reaching a dizzying 40,230 ...

But what exactly will they find? Find out more about the Kola Superdeep Borehole in this BBC Future article. Video by Irina Sedunova From the Mouse Bunker to the Embassy of Czechoslovakia ...

The SG-3 borehole, also known as the Kola Superdeep Borehole, the Zapoliarny borehole (named after the nearest city), or officially the Kola Superdeep Experimental Borehole (SG-3), is a drilling ...