Stone Age settlement found under the sea in Denmark

Stonge Age settlements can be found in numerous cities around the world, above water and bustling with contemporary human activity.

*that we know about. Humans are maybe 100k years old, and look how good we are with wood even today. We surely had settlements all over the place made from wood that just rotted away.

Do you mean just coincidental re-settlement of an old city or continuously inhabited settlements?

Former could definitely happen (and most likely did many times) but for the latter I never heard of any city from the stone age. Bronze age -- sure, but stone age? What are the examples?

Yeah, the city I was born in was written about by a Greek geographer in ~15BC. But the city suspects there was a much older Celtic city because the name can be traced to the Celts. But we can't prove it.