[Sawdring]

world's most famous prehistoric monument

Egyptian Pyramids.

[Lost Dutchman]

“world's most famous prehistoric monument..
Egyptian Pyramids.”

Not to quibble, but the Great Pyramid complex was built in the historic period.

[Oztrich Boy]

world's most famous prehistoric monument

Egyptian Pyramids.

Once the people doing it are writing down what they were doing it's no longer prehistory.

[SunkenCiv]

The Egyptian pyramids weren't built in prehistoric times; the exterior used to be covered with smooth facing stones which were carved with hieroglyphs, and endured until Greek accounts recorded that, at least. Hemiunu, the architect of the Great Pyramid, was interred near it, and his name is on or in the tomb.

[SunkenCiv]

Oh, see, I should have read the rest of the thread... [blush]