༸སྐྱབས་རྗེ་ཡོངས་འཛིན་རིན་པོ་ཆེའི་མཛད་རྣམ།

His Eminence the Yongzin Tenzin Namdak Rinpoche is the most senior teacher of the Bonpo tradition. He was born in 1926 in Southeastern Tibet. Rinpoche began his studies at an early age and took his vows at 15. He continued his studies at the major Bonpo monasteries: gYung-Drung-Ling and Menri in Tsang near Shigatse in central Tibet. Rinpoche's two main masters were Bonruponlob Rinpoche and the Venerable Lopon Sangye Tenzin, Rinpoche.

Rinpoche was elected to the position of Lopon in 1953 at the young age of 27, the same year he obtained the Geshe degree from Menri monastery. As Lopon, or Head Teacher, Rinpoche is part of an unbroken lineage of 33 generations through Nyamed Sherab Gyaltsen, the founder of Menri Monastery in Tibet. He was the teaching master from 1953 to 1957 when conflicts between the Chinese and Tibetans in Central Tibet became severe. He entered a long retreat in northern Tsang until 1960 when the Chinese invasion forced Rinpoche to flee Tibet. With great difficulty, including being shot and incarcerated by Chinese soldiers, Lo-pon Rinpoche was able to reach safety in Nepal.

In 1961 he was invited to London by Professor David Snellgrove under the auspices of the Rockefeller Foundation Visiting Scholar program. He remained in England for three years, collaborating with Professor Snellgrove on The Nine Ways of Bon, the first scholarly study of the Bon tradition to be made in the West.

Returning to India in 1964, Rinpoche founded Dolanji Settlement in Northern India, in order to give a home to the Bonpo people in exile. He returned to Europe in 1969 as a visiting scholar at Munich University to collaborate on a Tibetan-German-English dictionary. From 1970 to 1979 Lopon Rinpoche taught the monks at the Bonpo Monastic Center in Dolanji while at the same time supervising the publishing of a large number of important Bonpo texts in New Delhi. By 1978 enough texts were published to organize a curriculum around them. A traditional dialectic school was established under the guidance of Lopon Rinpoche. The purpose of this college was to preserve the Bonpo philosophical tradition where analysis and logic are applied to the teachings of the Sutras, the Tantras, and especially to the Dzogchen. In 1987 he founded another Bonpo monastery and International Education Center near the well-known hill of Swayambhu, west of Katmandu, Nepal known as Tritan Norbutse.

In 1992 Lopon Tenzin Namdak published Heartdrops of Dharmakaya, a handbook of Dzogchen meditation practices, from preliminaries to the most advanced togyal practices. This is the first book in English that is commonly available that actually describes in detail the practices of dzogchen.