There’s been some interesting research concerning the American Southwest and in particular Chaco Canyon in New Mexico and the Mesa Verde ruins in Colorado. Chaco Canyon is one of my favorite places as I find the ruins there absolutely fascinating because they are like no others in the Southwest. Perfect circular Kivas dot the canyon along with the remains of high rise living quarters (apartments). I’ve visited the site many times and I’ll never forget the first time I visited back in the 1970s. The attendant said we could go wherever we wanted so we did. We walked through the apartment ruins and I hiked down into many of the great Kivas. The mud brick work was unlike anything I’d seen in the American Southwest. In fact, it reminded me of stonework done by the Aztecs or Toltecs!
Back in January, 2010 researchers from the University of Arizona in Tucson, AZ studied stalagmites in caves in Arizona. Stalagmites are like record keepers as they provide a century by century record of climate and in this case they provided a record spanning 55,000 to 11,000 years ago. It was during that era that the American Southwest began to have some very significant climate fluctuations. The areas climate during that time alternated between wet and dry periods. Further, there were, at the time, abrupt (sudden) changes in the Ice Age climate all the way from Greenland to the southwestern US. Continue Reading