Kham pha hang uot dai nhat the gioi (Hang Phong Nha)
Kham pha tai cho Hang Phong Nha voi ghi chu thuc te cho khach tham ve dieu kien hang, loi vao va cac luu y theo mua anh huong den cac chuyen tham. Video cung cap cac chi tiet quan sat ve viec den tham dia diem va boi canh chi phi huu ich cho viec len ke hoach trai nghiem hang o vung trung bo noi dat Viet Nam.
