Follow in the Footsteps of the BBC's Nature's Epic Journeys Through the Yukon
A hundred thousand caribou face starving bears and wolves, deadly frozen rivers and rugged mountains as they undertake the world's longest land migration - 5,000 kilometres through the frozen Arctic wilderness of Canada and Alaska. Liz Bonnin leads a team of scientists and film-makers using cutting edge technology to follow the herd, providing insights into the individual lives of the animals.