There are many grottoes located here, such as the Surprise, Luon, Virgin, and Male grottoes. There is also a concentration of high mountains with vertical cliffs like citadel wall, mountains follow closely to make a huge beautiful watercolor picture of the sea. French calls this island Les Surprises. There are various species of plants such as benjamin fig trees, cycads, and orchids… and animals are monkeys, deer, and chamois. Perhaps, Bo Hon Island is famous for the grotto system hiding inside it. Each of them has its own marvelous beauty and is related to the moved legends.