Secrets In The Ice

A grim discovery in a Swedish lake reveals shocking ancient practices. Meanwhile, in the Canadian Arctic, the fossil of a previously unknown mammal is found.

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored.

Archaeologists in Russia find several mass graves, a plane from the Second World War sits on a Canadian mountain, and cosmic rays in Antarctica stump experts.

Human remains are discovered high in the Ecuadorian Andes, while a strange earthquake-like event is investigated in Canada.

Graves dating back some 34,000 years are discovered in Russia, and a team attempts to locate a British aeroplane that went missing in Iceland during the Second World War.

Off the coast of Antarctica, a volcanic island with a mysterious past is explored. The mummified corpse of a teenage girl is found in the Peruvian Andes. And a shipwreck is found near the Franz Josef archipelago in Russia.