Stretching 3,000 miles along the spine of Canada and the USA, the Rockies are among the natural wonders of the world. They take a starring role in the opener of this magnificent three-parter, which explores life in tough mountainous areas.

Highlights include a mountain lion with a secret food stash, the elusive wolverine and a brave elk calf’s bid to elude predators.

We also meet inspiring people who make the Rockies their home, including Native American families and their frenzied Indian Relay bareback horse races.

With gorgeous scenery and unusual sights, it’s a stunning watch.