From your link: "it was about 35,000 years ago that the Susquehanna and Potomac rivers, respectively, began carving out the Great Falls of the Potomac and Holtwood Gorge."
The Susquehanna carved out the Great Falls of the Potomac?
3 posted on 07/26/2004 9:14:22 AM PDT by lepton
("It is useless to attempt to reason a man out of a thing he was never reasoned into"--Jonathan Swift)