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

16. STEEP VILLAGES

The Mesa Verde archaeological site in the southwest is odd because the Pueblo people built villages in the sides of cliffs. The culture didn’t have a writing system, but archaeologists can reconstruct the past with oral stories and archaeological remains at the sites. Evidence from recent research suggests the Pueblo people had extensive knowledge of mathematics as they used the golden ratio to help construct a sun temple. Between 850 and 930 AD, the population rapidly dwindled and no one knows the cause.