Read about the 25 year history of the International Appalachian Trail.
A relatively new theory in geology discovered in the 1970s proved that parts of the ancient Appalachian Mountain range that existed 250 million years ago broke apart when the North Atlantic Ocean began to open up – and parts of the original range on the “super continent” scattered throughout Europe, Scandinavia and parts of Africa. It was the idea at the heart of the International Appalachian Trail.