Explore ancient civilization videos from USA & Canada
Beneath the streets of Rockwall, Texas lies a 7-story high, 20-mile long underground wall discovered in 1852. Explore the geological investigations and debates surrounding this fascinating formation.
Watch: Giant Pre-Historic Wall in Texas →Discover archaeological evidence from 24,000 years ago, indigenous oral traditions, and the sophisticated astronomical knowledge encoded in mound complexes across North America.
Ancient Turtle Island: Pre-Contact North America →