Did Da Vinci hide clues in his art? - Digging For The Truth | Sky HISTORY TV Channel

Did Da Vinci hide clues in his art? - Digging For The Truth

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What (or perhaps who) is the holy grail? And could a descendant for Jesus and Mary be walking the streets today? (Season 2, Episode 4)

A large spherical rock in a hole

Did archaeologists find the real life rolling stone from Indiana Jones? - Secrets In The Jungle

Ross Kemp underwater in full diving gear

Ross Kemp attempts to solve the missing cargo conspiracy - Ross Kemp: Deep Sea Treasure Hunter

Ross Kemp pulls a strange face while stretching a yellow measuring stick

Ross Kemp can't be trusted with diving equipment - 'Ross Kemp: Deep Sea Treasure Hunter' S1

Graphic of the Solar System overlayed on Stonehenge

Avebury Megaliths could be MORE significant than Stonehenge - Ancient Aliens: Ultimate Evidence

A man points at curved lines on the side of a large rock

Is this proof that there have been portals at Skinwalker Ranch? - Curse of Skinwalker Ranch

A downed WWII plane in the ice

The most mind-blowing frozen war secrets - Secrets In The Ice