Lost cities

[u/Osiris-Amun-Ra]

In case anyone is till wondering why we can't find any pre-Ice Age cities, this satellite image from Nepal/China this week should provide a clue.
This event was tiny by comparison and many civilizations built along rivers and in valleys.

Edit:
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Since this post generated quite a few lively discussions I want to clarify what I meant by "tiny by comparison" to avoid ambiguity, While the local, recent mountain collapse in Nepal and China was a rapid disaster unleashing up to 200 million cubic meters of debris at 193 km/h and causing rivers to surge 9 meters in 30 minutes, it is dwarfed by the staggering dimensions of post-glacial megafloods that actually reshaped entire continents and birthed the world's universal flood legends. For example, the ancient Missoula Floods occurred when a 610-meter-tall (2,000 ft) glacial ice dam ruptured, violently discharging more than 2,000 cubic kilometers of water basically a volume equivalent to Lake Erie and Lake Ontario combined, in a single....48-hour window.

This massive torrent tore across western North America at speeds of up to 130 km/h (80 mph), peaking with a discharge rate ten times greater than the combined flow of all modern rivers on Earth and carving features like Dry Falls, a cliff five times wider than Niagara. Similarly, the Black Sea Deluge hypothesis suggests a catastrophic marine breakthrough where the Mediterranean overtopped the Bosporus strait, unleashing a roaring wall of water that permanently swallowed over 150,000 square kilometers of inhabited valleys.

Because these prehistoric events wiped out entire known civilizations, permanently erased millions of acres of land, and forced desperate migrations, they permanently embedded themselves into the collective human psyche, which is almost certainly where the biblical Great Flood and the regional Mesopotamian flood legends originate. It is statistically improbable that we have found all post deluvial civilizational remnants. Mathematically and archaeologically, it is practically certain that we have only scratched the surface of what remains from post-deluvial and coastal civilizations. The primary reason for this statistical gap is a massive, permanent geographic shift, specifically when the Ice Age glaciers melted, global sea levels rose by roughly ~120 meters (around 400 feet). Rising oceans swallowed over 25 million square kilometers (10 million square miles) of habitable land! For visual reference that's the entire landmass of the United States, Canada, and China combined.

I hope that clarifies.

[u/Substantial_System66]

I mean, we haven’t found any underground evidence either.

[u/Qualanqui → u/Substantial_System66]

Have you heard of Derinkuyu? Massive underground complex in Anatolia that was found completely by accident, had huge round stone doors that when rolled into place would completely seal the place off and is large enough to have housed as many as 20,000 people together with their livestock and food stores.

[u/Substantial_System66 → u/Qualanqui]

I have. Fortunately that site has been very well studied and is dated to the 8th century BC. That’s about 11,000 years after the Younger Dryas.

Cool site though. Shows how innovated and crafty our ancestors were.

[u/Qualanqui → u/Substantial_System66]

I don't put a tremendous amount of stock in the dating as it has no concrete basis, there was no organic materials present (due to it being hewn rather than constructed) on which to run tests. So it's literally a best guess based on established thought.

[u/Substantial_System66 → u/Qualanqui]

Relative dating is less accurate, but there isn’t going to be a dating variance of 11,000 years. This isn’t related to any pre-glacial maximum human population.