Um, not to be picky, but exactly how much "civilization" could we be talking about here? This happened almost 13,000 years ago.
I mean, this is hardly the ransacking of the Alexandria Library.
“exactly how much “civilization” could we be talking about here?
We don’t exactly know. A lot of it was on the coasts, which are now under under water.
There may have been a lot going on in the areas not covered by ice.
“Five kilometres off the south-east coast of India, submerged at a depth of 23 metres beneath the murky, shark-infested Waters of the Bay of Bengal, an ancient man-made structure sits on the bottom of the sea.
The structure is U-shaped, like a huge horseshoe; its periphery measures 85 metres and its walls are about 1 metre thick and 2 metres high.”