Hosts Josh and Chuck explore the Kola Superdeep Borehole, the USSR’s Cold War-era project to drill deeper into Earth than any other human endeavor. They discuss the technical hurdles, such as extreme heat and shifting rock, that halted progress at 7.6 miles, and debunk the urban legend that the Soviets heard screams from hell. The episode highlights scientific discoveries, including ancient fossils and deep underground water, while contrasting Soviet achievements with earlier American attempts.