Great mysteries that have been frozen in time, from the mummified remains of three Inca children in the Andes to members of the ancient Yupik people in Alaska.

Great mysteries that have been frozen in time, from a body buried on the Himalayas' Killer Mountain to the remains of a woolly mammoth.

More secrets buried in ice, from an ancient mummy with fantastical tattoos buried in Siberia to the remains of a rare infant woolly rhino.

More fascinating history buried frozen in the ice, from the body of a legendary mountaineer to the discovery of a zombie virus.

The fate of a British South American Airways flight, which disappeared in a snowstorm on August 2 1947 en route from Buenos Aires to Chile. For decades the fate of the craft and its 11 passengers and crew was surrounded by rumours of escaping Nazi spies and stolen gold.

Visits to the most remote, cold and inhospitable places on the planet to reveal great mysteries that have been frozen in time. This programme reveals how and why humans have become frozen in time, from missing Second World War aircraft to a frozen lake filled with human remains.