Ba Mun Island is an island belonging to Minh Chau communes of Van Don District of Halong Bay, lying parallel to the island of Quan Lan. The Island is also known as High Island Block. Ba Mun Island is about 15 km from the shore. The island has an area of approximately 1800 hectares with more than 20 km in length, narrow width, stretching from east to west. The highest mountain is called Mandarin mount (Quit mountain), with a height of 397 m. The flora and fauna on the island is very rich and there are many rare species.
Ba Mun Island is the one schist island with primeval forests in Ha Long Bay. On the island there are quite a few uncommon forms of timber. A few of them embrace Dinh timber, Lim timber, Sen Timber, Tau Timber. They're all bushes standing there for a few years, creating an enormous circumference. Some develop so massive that they require three to 4 folks to hug round. Ba Mun Island is the place many species of uncommon animals corresponding to antelope, deer, monkeys, langurs and sea birds, migratory birds ... are being protected. On 01/24/1997 Ba Mun forest has been acknowledged as Bai Tu Long national Forest.