Hà Giang
Hà Giang is bordered by Cao Bằng, Tuyên Quang, Lào Cai, and Yên Bái provinces and has a common international border with China in the north. Hà Giang has many high rocky mountains, limestone formations and springs; the important mountains are the Cam and Mỏ Neo. The major rivers of the region are the Lô River (Hà Giang city is located on its left bank) and Miện River.