Thẳm Khến cave, natural masterpiece in Điện Biên
Located nearly 1,000m above sea level, Thẳm Khến cave in Nà Xa Village, Mường Đun Commune, Tủa Chùa District, Điện Biên Province contains many historical, cultural and scientific values.
Hà Giang Province is a wild and charming land, and much of the northern mountainous province is incredibly beautiful, including Xà Phìn Village, Phương Tiến Commune, Vị Xuyên District.