@ottocrat

The difference between 8,000 BCE and 7,000 BCE kinda blows my gourd. That's a lot of land to disappear in just a thousand years — and a thousand years isn't a very long time. That's fast enough that your grandmother could have remembered a time when this coastal swamp was merely marshy ground; and her grandmother told her stories of when it was a flood plain, wonderful farmland, and the sea was almost a mile away.