If you've already seen the Grand Canyon, make your way to this North American canyon that's even bigger (and that actually ...

From digging up ancient artefacts to swimming in the freezing Arctic Circle, Nick Knowles experiences the wonders of the world by train as he sets out on a range of globetrotting trips.

A scenic train line called the Ferrocarril Chihuahua al Pacífico, colloquially known as Chepe, cuts through the canyon on its 220-mile journey from Los Mochis in Sinaloa to Creel in Chihuahua.