Stretching almost unbroken from Alabama to Belle Isle, Newfoundland, the Appalachians are one of the oldest mountain ranges in the world. In Mountains of the Heart, renowned author and avid naturalist Scott Weidensaul shows how geology, ecology, climate, evolution, and 500 million years of history have shaped one of the continent's greatest landscapes into an ecosystem of unmatched beauty. This edition celebrates the book's 20th anniversary of publication and includes a new foreword from the author.