Preview Karst limestone rocks and house boats, Halong Bay, UNESCO World Heritage Site, Vietnam, Indochina, Southeast Asia, Asia Image ID: 834-2378 Artist: Eurasia Purchase a commercial license Buy framed prints & more from our print store travel destination photography color image horizontal day outdoors landscape landscapes scenics rock formations karst limestone rocks water ha long ha long bay halong bay halong world heritage site vietnam indochina asia southeast asia houseboats floating houses house coast coasts