Ngawa Town in the context of Sichuan Province

Bon or Bön (Tibetan: བོན་, Wylie: bon, ZWPY: Pön, Lhasa dialect: [pʰø̃̀]), also known as Yungdrung Bon (Tibetan: གཡུང་དྲུང་བོན་, Wylie: gyung drung bon, ZWPY: Yungchung Pön, lit. 'eternal Bon'), is the indigenous Tibetan religion which shares many similarities and influences with Tibetan Buddhism. It initially developed in the tenth and eleventh centuries but retains elements from earlier Tibetan religious traditions. Bon is a significant minority religion in Tibet, especially in the east, as well as in the surrounding Himalayan regions.

The relationship between Bon and Tibetan Buddhism has been a subject of debate. According to the modern scholar Geoffrey Samuel, while Bon is "essentially a variant of Tibetan Buddhism" with many resemblances to Nyingma, it also preserves some genuinely ancient pre-Buddhist elements. David Snellgrove likewise sees Bon as a form of Buddhism, albeit a heterodox kind. Similarly, John Powers writes that "historical evidence indicates that Bön only developed as a self-conscious religious system under the influence of Buddhism".

Nangzhik Monastery (Wylie: snang zhig dgon, Chinese: 郎依寺, locally pronounced "Narshi" or "Nogi"), formerly known by several other names (Wylie: snang zhig rgyal bstan phun tshogs gling, snang zhig bkra shis g.yung drung gling, snang zhig phyogs las rnam rgyal bkra shis g.yung drung gling), is a monastery of the Bon religion in Amdo, modern Ngawa Town, Sichuan, China. It is about a 4 kilometres (2.5 mi) walk up a shortcut to reach the monastery on a hill to the north of the town. On a hill to the east is another Bon monastery named Togden or Topgyel which has a large stupa nearby.