Aerial of the Song Con River with the limestone mountains in the background, Phong Nha-Ke Bang National Park, UNESCO World Heritage Site, Vietnam, Indochina, Southeast Asia, Asia

photography horizontal color image travel destinations travel song con river river water limestone mountain phong nha ke bang national park unesco world heritage site national park vietnam asia aerial view outdoors day no people cloud building mountain range house boat forest tree field landscape scenics clouds cloudy daytime forests trees travel destination tourist destination tourist destinations houses home homes residence residences buildings household households house exterior house exteriors mountains national parks public land nobody no one no person outdoor outside rivers flowing water