Cool article. The four corners area has an astonishing variety of climates and terrains. In many ways this is a strength for the region, but microclimates are delicate and climate change led to massive disruptions in a delicate balance.
As an aside, I'm glad to see that 'Ancestral Puebloan' has superseded 'Anasazi' as the demonym for the Chaco Canyon & Mesa Verde civilizations.
A little further south, the Mogollon people [1] are also getting more attention. Lots of the groups in that area moved north and south based on periods of cold or droughts, came into conflicts, and so on (at least this is the current theory behind things like the Gila Cliff dwellings and Mesa Verde and similar cliff dwelling sites, AIUI).
