Project Camelot radio had a great guest today Michael Tellinger talking about the possible oldest place on Earth in South Africa. He has severval web sites that might be of interest for research.
http://www.slavespecies.com/index.asp
http://www.makomati.com/
http://www.adamscalendar.com/Welcome.html
There are great pictures of the site, Adam's calendar.
He has been talking about the mountains being some of the oldest on the African continent so that would be the same as the Appalachian Mountains. I'm wondering if there are any or if there were any natural resources in the Appalachian area. So many things to investigate. He has gotten most of his info from the Sumarian texts.
Interesting video on you tube also.