chaco culture national historical park, sky window in anasazi ruins at pueblo del arroyo, new mexico

aboriginal america american anasazi and archaeology architects architecture arroyo blue broken building canyon chaco civilization cultural culture del desert detail details first heritage historical history indian indigenous landmark light lintel masonry mexico morning national nations north of outdoor outdoors park pueblo remains remote remoteness rock rocks ruin ruins show site skills sky southwest southwestern states stone stones sunlight unesco united usa wall west western window world