[TigerLikesRooster]

The sites of very ancient civilization have turned into dry/inhospitable lands a long time ago.

This Xinjiang/Central Asia, area around Liao River, ancient Hindu civilization site now in S. Pakistan, Sumerian sites, and ancient Egyptian sites(around Khufu's time)

Our ancient history is either buried in the desert/waste land(after Ice Age before 2000 BC) or under the water (during the Ice Age.)

[SunkenCiv]

Well said.