here artist james turrell has turned back to the earth for his inspiration. for the modern viewer to experience this work of art will be something of an act of pilgrimage. when you come in, you won't come over the top of the crater. you'll come through a 1,400-foot-long tunnel lined with the blue clay sand navajos use for their art. the tunnel will line up with the sun at every equinox, with the moon every 18 years, and the other viewing platforms will also be lined up with the planets, like the monuments of the ancient world, designed to take you out of yourself. out here, above the immensity f the painted desert, with volcanic cones stretching away to the horizon, is the very image of geological rather than human time, and yet what turrell is trying to do up here is literally reshape nature with human hands. he's transforming this crater into a perfect circle so that the modern visitor may come here and in this silence and solitude, take in the clear sky of the north arizona desert like a complete sphere. and in doing that, he's trying to restore to us some