I think there were civilizations at least as advanced as the ancient Romans BEFORE the last ice age and the ice age drove them into dust of history.
That would be from 120,000 BC, till 12,000 BC. Just watching programs like “life after people” illustrate how little time it takes to wipe all evidence of human civilization away through natural processes. Plus human civs usually start out around rivers near the sea, during the last ice ages those areas could have been developed and then as the ice age ended the sea would have covered them “great flood myth” anyone?
Much of the evidence of human civs before 12,000 BC could be laying under the mud and sediment of river deltas that are now hundreds of feet under ocean waters. We won;t begin discovering this until we can create radar tech that can scan below the ocean and through the sediment at high resolutions.
They keep find more and more evidence of very early civilizations that keep pushing back the clock on what the “earliest human civilization” really was.
Did you happen to read, “Fingerprints of the Gods” by Graham Hitchcock? The whole book is about the possibility of civilizations existing before what is commonly accepted. He went off the rails when he asserted that they had been concentrated on Antarctica, but he has since recanted, and said basically what you did.....which is we can’t see much of the evidence of earlier civilizations because they are all under water after the ice sheets melted. I find myself believing it.
Plato Prehistorian:
10,000 to 5000 B.C.
Myth, Religion, Archaeology
by Mary Settegast
paperback
Like the recently unearthed ruins at Göbekli Tepe in Turkey; dated to about 12,000 B.C, these sites are likely just the tip of the iceberg of past civilizations. Fascinating stuff.
Or buried beneath the boulder pavement or outwash plains of the last glaciation...