The Cactus Hill site and other sites suggest humans came to the Americas earlier than previously thought.
The sea level was still very low in 12,000.
So any human-built structures at then-sea-level would have to be at least 100 feet down.
With much of Eastern Carribean being shallow, could that have left places like the Cayman depths cut off from the Atlantic?
Blam's huge underwater terrain map of the entire planet swamped my PC, but it is mind-expanding and answers a lot of questions about prehistoric migrations.
With much of Eastern Carribean being shallow, could that have left places like the Cayman depths cut off from the Atlantic?"
Now you have your thinking cap on. The reduced ocean level range that I have seen the most mentioned is 300-500ft with most accepting 400ft. Somewhere I have an underwater map of the world with the ocean levels reduced by 300ft. It gets real interesting in the Caribbean and others areas show the Persian Gulf dried up, the Red Sea landlocked, Japan and Korea connected and etc. I'll see if I can find it again and post it. Also, don't forget the early American, Topper Site.