The train is ‘my time machine’: a tour of Naples’ hidden ancient wonders

A new film about this corner of southern Italy reveals rarely visited villas, seismic landscapes and a ‘civilisation buried mid-sentence’ – all accessible by trainOne by one, the visitors descend through a tight tunnel cut through volcanic rock into the damp foundations of the Teatro Romano buried beneath Herculaneum, with the weight of 2,000 years of city above them. “This is a time machine,” the guide says, “and we are going back.” It is pitch black as film-maker Gianfranco Rosi’s camera finds...