Daniel, Tony. "God's Foot"
Divergence: c 80,000,000 BCE
What if: What if the Eurasian and African tectonic plates collided with the North American during the late Cretaceous.
Summary: A Korean-Japanese tourist climbs the great Appalachian peak Cheaha and becomes embroiled in a conflict between strange Western gods.
Published: In Asimov's Science Fiction, May 1993.