Heavy Sand

David Tennant, John Barrowman, David Morrissey and the League of Gentlemen's Mark Gatiss look back at the Time Lord's greatest moments.

A land of fire and ice, the volcanic peninsula of Kamchatka lies in Russia’s far east. With the land constantly being reworked by eruptions and landslides, this far-flung part of the country is dangerous, but incredibly fertile. Heading right into this magical land, this stunning film follows soaring golden eagles, scavenging wolverines, young red foxes and local brown bears partial to a dip in a natural hot spring.

While Asiatic black bears hang from the trees and chipmunks search for food, the spotted sika deer travels to the coast to supplement its diet with kelp. The presence of deer on this open ground attracts the region's big predator, the Amur tiger. But the largest cat in the world has dangerous enemies itself: poaching and habitat destruction are an ever-present threat to tigers in the Ussuriland region of Russia.

The Russian Arctic is one of the world’s most extreme habitats, yet it is a haven for polar bears, lemmings, arctic foxes and walruses. In late August, massive muskoxen bulls gather together to compete for mating dominance. Each bull can weigh 400 kilogrammes and charge at a speed of 40 kilometres an hour; a head-to-head impact can be heard more than a kilometre away.