Nowhere else in the world offers a more graphic view of deep forces of geology at work than the Four Corners portion the Colorado Plateau. The arid climate, the peculiar volcanoes, the powerful forces of erosion, and the clashes of Earth's tectonic plates makes for the highest concentration of national park features in the United States. We travel from wind-swept deserts to dense forests as we move through the spectacular formations. In the process we witness the slow death of a modern lake.