Measuring over 270 miles long, up to 18 miles wide and a mile deep, the Grand Canyon is renowned for its spectacular geology and seven life zones, which support a vast diversity of plants and animals. This beautifully illustrated guide highlights over 100 familiar species of birds, mammals, reptiles, amphibians, trees, shrubs, wildflowers and fossils. The guide also features a detailed illustration that highlights the geologic history of the canyon from top to bottom over the past six million years. Laminated for durability, this handy guide is a great source of portable information and is ideal for field use by outdoor enthusiasts and professionals, as well as all visitors to the Grand Canyon.