30 Unusual Archaeological Finds In The US We Still Can’t Explain

8. ENORMOUS COMPLEXES IN THE DESERT

Chaco Canyon in New Mexico is one of the most critical pre-Columbian areas in America. The site has a lot of culture and history since the Ancestral Puebloans used the complex as a center of cultural happenings between 850 and 120 AD. The buildings also align with solar, lunar, and cardinal directions which means the builders knew astronomy. Many of the structures are massive and there are even underground structures. The big mystery his how and why the culture vanished.