Sunrise over ruins in Mesa Verde NP: Click Here for a short, single picture, video slideshow of the sun rising slowly on the ruins.
Mesa Verde has been uninhabited for over 500 years. It is a complex of
several ancient Puebloan Indian (aka "Anasazi") cliff
dwellings built under the overhanging rock cliffs. The reason the
complex was abandoned is not known for sure.
For more about Mesa Verde, see: en.wikipedia.org/wiki/Mesa_Verde_National_Park