Rising nearly 400 feet above the desert floor in a remote section of ancient Anasazi territory named Chaco Canyon stands an imposing natural structure called Fajada Butte. Along a narrrow ledge near the top of the butte is a sacred Native American site given the name Sun Dagger that a thousand years ago revealed the changing seasons to Anasazi astronomers. After the ancient people abandoned the canyon for unknown reasons 700 years ago the sun dagger's secret remained hidden except to a special few. In 1977 it was inadvertently "rediscovered" when known or suspected rock art and petroglyphs on the butte were being studied and cataloged.