Zhalu Monastery in Tsang is one of the oldest monasteries in Tibet. The Serkhang Tramo temple was built originally in 1027 by Chetsun Sherab Jungne of the Che clan, and located close to the Gyengong Lhakhang, built in 997 by Loton Dorje Wangchuk. Buton Rinchen Drub established the Ripuk hermitage in caves above the monastery and retired there. Zhalu is loosely associated with the Sakya school, maintaining its own tradition based on the Sakya and Kadam teachings of Buton.