The magnificent and enduring spine of the United States, the Rocky Mountains are host to thousands of flora and fauna species, as well as rugged topography and rich and varied habitats. Comprehensive yet portable, this beautiful guide describes trees and shrubs, flowering plants and ferns, fungi and lichens, insects and fish, amphibians and reptiles, birds and mammals, rocks, and even the changing mountain climates and the ecological effects of forest fires. Naturalist and writer Daniel Mathews delivers immersive natural history. With humor, pathos, and verbal elegance, he covers the central core of the Rockies: Glacier National Park, western Montana, and eastern Idaho; all of Colorado's mountains; the Sangre de Cristo Mountains in New Mexico; the Wasatch and Uinta Mountains in Utah; and the Bighorns, Laramie, and Medicine Bow Ranges in Wyoming. This essential guide to the region is perfect for hikers, campers, naturalists, students, teachers, and tourists--everyone who wants to know more about this stunning and expansive mountain range.