There are several ancient monuments proving that our predecessors possessed knowledge of astronomy and used it for practical purposes.
A woman's mysterious death in the desert leads archaeologist Nora Kelly into a world of ancient stones, missing professors, and possible human sacrifice.
4k Films by Adnan on MSN
Is Chaco Canyon the most mysterious site in the Southwest?
Chaco Culture National Historical Park preserves the remains of one of the most remarkable ancient civilizations in North ...
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