The of steep roadways beneath the King Range Mountains include towering Douglas-firs, a few coastal redwoods around the upper reaches of the Mattole River, rocky shorelines, and black sand beaches, as well as a menagerie of fauna, including black bears, black-tailed deer, river otter, California quail, bobcat and porcupine, reptiles such as rattlesnakes, western fence lizards and alligator lizards, various amphibians and bald eagles.