Dau Be Island is 500 m west of Hang Trai Island, and 28 km from the Bai Chay Tourist Wharf, in an archipelago comprised of the Tra Le islands outside the southeast side of Halong Bay (seaport of Lan Ha Bay). It has an area of 22,863 sq. m, and its highest peak reaches 139 m. When speaking of the island, it is impossible not mention to Ba Ham Lake, a famous spot which people had known a long time ago.