I took these photographs at Hovenweep National Monument in August 2013.  Hovenweep is located in the border region of Utah and Colorado, and is home to dozens of towers and other stone masonry structures that were built by ancestral Puebloan people more than 700 years ago.  The great landscape photographer William Henry Jackson photographed some of these structures in the late 19th century and gave the area the Ute name 'Hovenweep', meaning 'deserted valley'.