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I understand about rock structures and wave action erosion. If they could get deep enough fast enough and out of fast currents. This is usually from a rapid seismic event, and most often breaks up the large rock structures to a certain extent. Underwater archeology is finding more of them such as at Thera (or Santorini), and the remains of some of Alexandria. Burial by fine sediment eventually gets most. The ones found, even in the Black Sea anoxic area, are interglacial epoch structures(some use stone). The oldest I have heard of are buried in sand in SE Egypt at about 9K years old. The Santorini explosion that destroyed the Minoan (Atlantean) Civilization had a 400' tsunami that hit Crete. There were many other large Mediterranean tsunamis previous to that from there and numerous other volcanoes in the region. Perhaps some were witnessed there by humanoids or humans prior to civilization. Some Mediterranean storms are nothing to sneeze at either, even though not hurricanes, they wrecked many ships of great size.
Very little except conjecture on people living in a civilization using large rock construction(even if just foundations) during the glacial epoch 11K+ YBP, either on the previous shore or on land. I do know there are searches underway using the latest in sonar and other equipment. Mostly turning up old shipwrecks. There is conjecture the steps off Japan were made well over 10K YBP for possibly religious type reasons like the Mayan step pyramids. Then some think they are from a seismic origin and just look man made.
The fast fill of the Mediterranean Depression ~5 million years ago was when there were only proto humans well south. Even before that, it was open ocean between Africa and Europe and before that was Pangaea.
The continental movement after Pangaea had a great deal to do with animal evolution.
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"With every decision, think seven generations ahead of the consequences of your actions" Ute rule of life.
“We do not inherit the earth from our ancestors; we borrow it from our children”― Chief Seattle
“Those Who Have the Privilege to Know Have the Duty to Act”…Albert Einstein
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