Côn Sơn Island

Côn Sơn is the largest island of the Côn Đảo archipelago, lying offshore from the mouths of the Mekong. Its mountainous interior rises above bays facing the sea routes along southern Vietnam. The islands stand near the crossing of routes running north and south along the coast and east and west across the sea. Their position and sheltered bays made them a useful landmark for vessels approaching the delta and the southern coast.