Cúc Phương National Park
Cúc Phương is in the hills of the northern Annamite Mountain Range. The park has mountains with karst rock and valleys with plants in them. The lowest elevation is 150 meters (500 feet) above sea level and the highest is 656 m (2,152 feet), at the summit of May Bac Mountain, or Silver Cloud Mountain. The limestone mountains have many caves, and visitors can go into some of them.