Bach Moc Luong Tu

Bach Moc Luong Tu, also known as Ky Quan San, is the fourth highest mountain in Vietnam at 3,046 meters, located on the border between Sin Suoi Ho Commune in Phong Tho District, Lai Chau Province and Lao Cai Province. Notable for its rugged trekking trails, sea of clouds, ancient mossy forests and panoramic alpine views, it is a popular destination for experienced trekkers seeking challenging multi-day hikes and cloud-hunting photography in northwest Vietnam.

Visitors can expect a strenuous multi-day trek through dense primeval forests, moss-covered trees, bamboo groves and steep ridges leading to the 3,046m summit marked by a stainless steel pyramid. The route offers expansive views of the Hoang Lien Son range, valleys filled with sea of clouds, sunrise and sunset viewpoints, and overnight camping at mountain huts or campsites. The trail starts from Sin Suoi Ho village and passes through cardamom forests and rocky slopes.

The mountain area is home to Mong and Dao ethnic communities, particularly in Sin Suoi Ho village, known for traditional stilt houses, cardamom cultivation and preserved cultural customs that visitors encounter at the trailhead.