Cam Duong cave (Hang Cam Duong) is the nicest cave in Yen Bai, located in the middle of the Bach Ngoc mountain in Chinh Quan village, Lieu Do commune, Luc Yen district, the Cam Duong cave can accommodate thousands of people. The cave’s mouth is 25m wide and stands at 12m high.
The terraced fields in Mu Cang Chai. Mu Cang Chai is a rural district of Yen Bai Province, in the Northeast region of Vietnam. As of 2003, the district had apopulation of 42,574. The district covers an area of 1,199 km2. The district capital lies at Mu Cang Chai.