The 'Well to Hell'
A story spread from 1989 that Soviet engineers drilling the deepest hole on Earth broke into a cavity at 14.4 km, heard human screams and measured 1,000 °C heat: they had drilled into Hell.
1989 CE · 69.40, 30.61 · status: hoax
The account
The tale first ran in Finnish and then American Christian media and was broadcast on Trinity Broadcasting Network, often naming a fictional 'Dr Azzacov' (also spelled Azakov). It borrowed from the real Kola Superdeep Borehole in the Russian Arctic, which reached a record 12,262 m in 1989 and found hot rock and water at depth.
The sceptical view
No such hole, depth or recording existed; the 'screams' were looped sound effects, which some have identified as the soundtrack of the 1972 horror film 'Baron Blood'. The real borehole's findings were geological.