A generation ago, a battle was successfully waged on this rugged island to preserve what was left of its premeval forests, the home to giant trees, many more than a thousand yeard old. Now tourism spawned by this natural heritage is threatening its survival. Tessei Shiba, spawned by this natural heritage is threatening its survival. Tessei Shina, hwo fought government plans to fell the trees three decades ago, is one of those warning of a second crisis.