Kathok was founded by Kathok Kadampa Deshek, a younger brother of the influential master Phagmo Drupa Dorje Gyalpo. According to tradition, Guru Rinpoche prophesied that Deshek would be an emanation of Yeshe Tsogyal, the legendary female consort of Padmasambhava, and that 100,000 people would achieve rainbow body at Kathok -- the highest form of spiritual realization in Dzogchen practice, in which the physical body dissolves into light at the moment of death. The prophecy is said to have been fulfilled. Whether one takes such claims literally or metaphorically, they speak to the extraordinary spiritual reputation Kathok cultivated over centuries. By the time of Tibet's annexation in 1951, about 800 monks lived at the monastery, and numerous branch institutions had spread across the Do Kham region and beyond.

Kathok distinguished itself as a center of the Kama lineages -- the oral transmission teachings of the Nyingma school, as opposed to the Terma or hidden treasure traditions. This specialization gave Kathok a particular scholarly gravity. The monastery's third abbot, Jampa Bum, whose 26-year tenure ended in 1252, is said to have ordained thousands of monks from across Tibet, drawing students from the Kham regions of Minyak, Jang, and Gyemorong. In 1999, disciples of Kenpo Munsel and Kenpo Jamyang compiled a Kathok edition of the oral lineages running to 120 volumes -- twice the size of the Dudjom edition, containing rare Nyingma treatises on Mahayoga, Anuyoga, and Atiyoga that had never been seen outside Tibet. Kathok also became the last bastion of the Anuyoga tradition when other Nyingma institutions let it decline.

The original monastery fell into disrepair and was rebuilt on the same site in 1656, driven by the energy of two treasure-revealers: Duddül Dorje and Rigdzin Longsal Nyingpo. Under Longsel Nyingpo's influence, Kathok evolved its dual emphasis on both Kama and Terma traditions. Then came 1966. During the Cultural Revolution, the monastery was destroyed and its lamas imprisoned. The rebuilding that followed was led by Moktsa Tulku, who began the work after his release from prison, aided by Khenpo Ngakchung Tulku. The human cost extended beyond the monastery walls. Katok Situ Chokyi Nyima, one of Kathok's lauded scholars, died of starvation in Gothang Gyalgo prison camp in 1962. These losses make the monastery's survival not merely an architectural achievement but an act of cultural resilience carried forward by individuals who paid dearly for their commitment.

Among the more colorful figures in Kathok's history is Chopa Lugu, the 1st Chonyi Gyatso, who lived sometime between the seventeenth and mid-eighteenth centuries. He earned the title "The Chod Yogi Who Split a Cliff in China" and was remembered for his nightly bellowing of bone-trumpet and shouting of phet during pilgrimage -- much to the irritation of the business traveler who accompanied him. The contrast between Chopa Lugu's ecstatic practice and his companion's annoyance captures something essential about Kathok's character: this was never a place of quiet, decorous religion alone. Dzongsar Khyentse Chokyi Lodro, one of the twentieth century's most important Tibetan Buddhist masters, was educated here. The 4th Kathok Getse Rinpoche, known for his mastery of Dzogchen, served as the 7th head of the entire Nyingma school in 2018, the year he died in an accident. Scholarship, eccentricity, devotion, and loss -- Kathok's story holds all of them.