On the south-east side of Hạ Long Bay, Ðầu Bê Island is 500 m from Hang Trai Island to the east, and 28 km from the Bãi Cháy Tourist Wharf, in an archipelago comprised between the Trà Ngư and Ðá Lẻ islands outside Hạ Long Bay (seaport of Lan Hạ 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 Hâm Lake, a famous spot which people had known long time ago.