One of the natural wonders of the world, the Grand Canyon is also home to a national park visited by more than 4 million people each year. Readers will learn much more about the high desert plateaus, colorful rock formations, and massive canyon, so large that it can be seen from space. Author Doreen Gonzales describes the geologic formation of the canyon and tells of the Hopi and Paiute Indians who lived there and the Spanish conquistadors who explored it. Details about the park's flora and fauna and activities for visitors, including rafting on the Colorado River, hiking, camping, and snowshoeing in winter, are also provided.