World’s OLDEST Man Made Structures

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Adam's Calendar: World's Oldest Man-Made Structure

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Comparison: Oldest Man Made Structures

Archaeologists discover 476,000 year old structure, thought to be oldest known wooden structure ...

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The oldest man-made structure

Which is the oldest man-made structure in the World!

What is the oldest man made structure on Earth?

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What is the Oldest Man-Made Structure?#didyouknow #learning #facts

Cleopatra's Needle - the OLDEST man-made object in London

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Is Adams Calendar the oldest man made structure on earth? #shorts

HOW OLD IS THE OLDEST MAN MADE STRUCTURE

Let's discover Gobekli Tepe the oldest man-made structure in the world.