Tuesday, 14:45 
Greatest Train Journeys From Above
Canada's Wilderness Railroad
Crossing one of Canada's 10 provinces, Manitoba, from south to north, the Winnipeg to Churchill train is filmed from above as it winds through snow-covered grasslands, Canada's boreal forest and into the frozen barren lands, just below the Arctic Circle. It's a constant struggle to keep on track as engineers battle with snow and ice in temperatures that reach as low as minus 45 degrees.