Secrets in the Ice

The Patagonian ice dragon, which isn't actually a dragon but an insect that has adapted to life on the frozen glaciers of South America's Andes Mountains, the only bug that lives on the Patagonian ice fields. Scientists believe that their bodies contain natural antifreeze, which stops their blood from turning solid amidst the bitter cold.

Visits to the most remote, cold and inhospitable places on the planet to reveal great mysteries that have been frozen in time. Here, a Swiss fisherman uncovers ancient Celtic relics in Lake Neuchâtel, hinting at a violent Iron Age battle that happened around 225BCE.

The Siberian death mask, which was discovered in eastern Siberia in 1968 in a burial mound with cremated remains. It is a clay head sculpture of a young man that contains a ram's skull.

Great mysteries that were once frozen in time, here focusing on secrets now revealed of prehistoric warfare.