12. VILLAGE RUINS OF ANCIENT DWELLERS
In the Sonoran Desert, there’s an archaeological site called Casa Grande Ruins, and it’s fascinating because 2,000 people known as the Ancestral People of the Sonoran Desert built and occupied the massive compound about 1,000 years before vanishing unexpectedly in the 1400s. The dwellers were prehistoric farmers because of the irrigation canals and artifacts found at the site. There’s no written language, and the only historical account is from journal entries by Padre Eusebio Kino who visited the ruins in 1694.