When speaking of the beautiful islands of Ha Long Bay, one cannot forget Bo Hon (Soap-Berry Tree) Island, not only because of its splendid scenery, but also because it is one of the largest islands in the area. Bo Hon Island is most famous for the grotto system which hides inside it, as there are many grottoes located here, such as the Surprise, Luồn, Virgin and Male grottoes. There is also a concentration of tall mountains with vertical cliffs that appear like citadel walls and are reflected in beautiful color on the sea.
One can also see many species of plants on Bo Hon Island (benjamin fig trees, cycads and orchids), and animals such as monkeys, deer and chamois.