We delve into ancient mysteries that have remained unsolved for thousands of years.
What made the Harappan civilisation leave their cities for the Himalayas?
The discovery of mysterious fossils by Israeli archaeologists alters our evolutionary history.
Over a century ago, divers discovered a shipwreck containing an ancient machine that rewrote human history.
How did 500 human skeletons end up in a remote lake high in the Himalayas?
BEST OF 2019: Who's really buried in these intriguing monuments?
Were the original inhabitants of the Canary Islands really survivors of the lost city of Atlantis?
Who were the mysterious skeletons found 100ft underground – and why were they there?
The Pulemelei Mound in Polynesia offers unique insight into Samoan history
In the south Australian countryside sits a mysterious Aboriginal stone arrangement.
A mysterious megalithic monument emerges from Spain's watery depths.