Episode Details

In 1970, Soviet scientists began drilling the deepest hole in human history—the Kola Superdeep Borehole, a shaft that would eventually reach over 12 kilometers into the Earth's crust. Officially, it was a scientific mission. But the deeper they drilled, the stranger the readings became. Unidentified noises. Sudden temperature spikes. Something moving at the bottom. Then the project was abruptly abandoned, the hole sealed, and the site left to rot. I worked on that project. And now I know why they stopped digging.

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