Zhung Treuzhing, a Kagyu monastery located in Gongkar county, was founded by Ngok Kunga Dorje in the twelfth century near the site of a hermitage visited by his uncle, Ngok Choku Dorje, a disciple of Marpa Chokyi Lodro. It is said that Marpa's skull was located within a stupa at this monastery, which was the seat of lamas in the Ngok lineage.