Anasazi on the Colorado Plateau

Timeline

1. 1190–1195Mesa Verde · Mesa VerdeMulti-room stone communities beneath the cliffs continued to expand, with populations concentrating at Mesa Verde and elsewhere, showing that Anasazi society still maintained large-scale settlement and complex building traditions in the late 12th century.
2. 1195–1199Colorado Plateau · Four CornersTree-ring and sediment records indicate that persistent drought intensified agricultural risk, and some lowland communities began to be abandoned or contracted, foreshadowing larger-scale migration and defensive settlement patterns in the 13th century.