Best-selling author David Quammen takes readers on a breathtaking journey through America's most inspiring and imperilled ecosystem - Yellowstone National Park. Filled with amazing images captured by eight National Geographic photographers over an extensive two year deployment in the park, it is unlike any Yellowstone book before it. Yellowstone's storied past, rich ecosystem and dynamic landscape are brilliantly portrayed in a captivating mosaic of photographs and eloquently written text that blend history, science and research from the field.