Looking southwest into the Valley
of the Sun from Lookout Mountain. A low expanse in the provides a great view of downtown Phoenix. Behind, in the immediate
background, is the long, low ridge of South Mountain, a . Barely visible through the intense sunlight, to the right in the
distance, and much higher, are the Sierra Estrella.
The valley where central Phoenix sits is a gigantic down-dropped block of
continental crust between mountain ranges.