For centuries, the spectacular landscapes now protected in Waterton-Glacier International Peace Park have amazed and inspired us. Historian-naturalist Paul Schullery and artist-illustrator Marsha Karle bring us a new and richly textured portrait of this magnificent region and reveal why Waterton-Glacier is a world treasure. Through Schullery's text and Karle's watercolors and drawings, we crisscross the roads and trails of this magnificent wilderness. We learn its deep geological history and encounter its wild residents. And we discover its ever-increasing value as a barometer of planetary health in today's rapidly changing world. Schullery, who has been described as the foremost citizen of the American national parks, and Karle, whose art is informed by a National Park Service career in some of North America's most beautiful landscapes, combine their talents to create a memorable tale of the beauty, power, and peril of this high, wild country.