Journey through the prehistory of North America - beginning 14,000 years ago when people were first entering this vast continent. Witness ancient beasts, mammoths, and mastadons to see how their successors carry on their legacy.

Originally seen on television in 2003.

Land of the mammoth --Canyonlands -- Ice age oasis -- Edge of the ice -- American Serengeti -- Mammoths to Manhattan -- bonus tracts: Grand Canyon : from dinosaurs to dams -- Everglades : to hell and back.