Redwoods are among the world’s largest living organisms. Some grow higher than 100 meters and live to be more than 3,000 years old. A belt of redwood forest stretches along the west coast of California in the United States. By using the latest advances in tree climbing, this program reveals an entirely new world. High up in the treetops there exists yet another kind of forest. Explore this newly uncovered landscape lying 100 meters above ground, and discover the reason why these gigantic trees only grow in this particular place.