Spectacular multi-colored rock formations dominate Lake Mead National Recreation Areas desert landscape. Hidden within these multi-colored rocks lies the story of over two billion years of geologic time; nearly half of the Earths 4.5 billion-year history!
Explore this regions dynamic geology as we take you on a journey back through time.
This site is under development by the staff of Lake Mead National Recreation Area and the United States Geological Survey. Please share your comments and suggestions with us.