@fewdayshalong: Hidden among the limestone islands of Bai Tu Long Bay 🌿 Thiên Cảnh Sơn Cave is one of those stops that quietly surprises people, with impressive rock formations and beautiful views over the bay. Have you been here before? #VietnamTravel #ExploreVietnam #HiddenVietnam #VisitVietnam #FewDaysHaLong #BaiTuLongBay