Atheistic websites have tried to “debunk” this recording as a rip-off from a 1972 horror film called Baron Blood. I find it unpersuasive: the audio clips don’t match at all.

Above is a video of the Kola Superdeep Borehole. Many people in Russia believe this rusty, sealed, bolted pipe covering is Dr. Azzacov’s “Well to Hell” from 1990. The urban legend is so popular that two horror films have been based on it. –J.B.