How did this site get underwater?.......Was there an earthquake or similar catastrophe, millenia ago?...
The Ice Age ended, all the ice melted and the water in the oceans rose between 300-500 feet flooding these coastal communities. There were three melt 'surge' periods...the last one was between 7-8,000 years ago. I have some 7,000+- year old wood that was flooded in this last flood.
Global warming. Seriously. Global warming.
Glacial features subsided and the channel was formed by the rise in water level.
The Grand Banks off of the coast of the Carolinas/Virginia are known to have been above water 150,000 years ago. This is where there has also been a lot of exploration and some good indications of human habitation. The Grand banks is one of the areas some archeologists believe that people from ice age France and Spain migrated to using far south ice sheets and the sea currents that moved a lot faster then than now. That would make the first humans on this continent european. Not PC but becoming more and more accepted.
