Ice Age Titans

Using archaeology, digital enhancement and AI analysis, the team puts these controversial interpretations to the test.

Along the former shores of Glacial Lake Humboldt, enormous stones appear to form turtles, serpents, birds and mastodon-like beasts.

High in the Andes, ancient pictograms and towering monoliths lead the team to hidden chambers containing bone.

Archaeologists and experts put the mysterious stone beasts to the test, searching for tool marks, worked surfaces and deliberate engineering.

More than 3,400 metres above Colombia, the mist-shrouded Cerro El Tablazo reveals ancient paths, ritual platforms, carved bowls, petroglyphs and hidden caves.