World's Greatest Train Journeys from Above

Glacier Express (1x1)

:

Connecting iconic mountain resorts St Moritz and Zermatt, the Glacier Express is filmed from above winding along alpine peaks, over treacherous gorges and through vertiginous mountain ranges. It’s a constant struggle to keep on track as engineers battle deep snow drifts, harness the latest tech to protect the line from landslides and set explosives to guard against deadly avalanches.