Mu Cang Chai is a district of Yen Bai province. It shares the border in the north with Van Ban district of Lao Cai province, neighboring in the south of Muong La district of Son La province, being the west of Than Uyen Lai Chau province, sharing in the east of Van Chan district and Yen Bai province. The district is located at the foot of Hoang Lien Son mountain range, at an altitude of 1,000 metres above sea level. To get to Mu Cang Chai district, travellers must pass through Khau Pha Pass, which is one of four imposing passes in the northwest of Vietnam.
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