two mountains associated with the legend “co tien mountain” very interesting. ha giang vietnam

beautiful architecture history cultural travel holiday landscape natural nature famous beauty wonderful weather scenery colorful landscapes central tower ighlands vietnam majestic meets hagiang ethnic villages unesco world heritage leng pass mapileng nho river nhoque dong van karst plateau geopark dongvan heaven gate quanba two mountains associated legend aco tien mountaina interesting nuidoi nuidoicotien