mesa verde national park, colorado, square tower house in evening light, usa, unesco world heritage site

aboriginal afternoon america american anasazi ancient architecture buildings canyon chapin cliff cliffs colorado cultural doors dramatic dwellings heritage historic history house houses indigenous late light mesa national nations native north outdoor outdoors overhanging park preserved protected pueblans pueblo rooms ruin ruins sandstone sheer site southwest square states sun sunshine tower travel trees unesco united usa verde view viewpoint vista walls west western windows world