by Will Storr For centuries, Hollow Earth conspiracy theorists have tried to prove that there’s a whole other world beneath our own. But first they need to find the way in...Late at night, on October 4 2002, a strange guest appeared on a cult American radio show. Coast to Coast AM with Art Bell had a reputation for exploring weird themes with fascinating guests, but few had ever sounded as excited as this one. Dallas Thompson was a former personal trainer who had spent his [...]