Arkansas River Valley, Celestial September Sunset

An introduction to the Arkansas River Valley of central southern Colorado, about three hours southwest of Denver.  The continental divide is visible to the west, beyond the Collegiate Peaks (Yale, Princeton, Harvard).  This is high desert.   The first image, near Frisco and Buena Vista, is perhaps 8,000 feet.  Going downriver toward Salida in the lower three images, the valley slopes down to 7,000 feet and the Ivy League names give way to Native American ones of the high mountains:  Shavano, Antero.