Dudjom Lingpa (1835-1904) was a Tibetan visionary, meditation master, and treasure revealer (tertön) born in the Golok region of northeastern Tibet. Though he received no formal monastic education, he experienced visionary encounters with enlightened beings from early childhood and went on to reveal three cycles of pure-vision teachings on the Great Perfection as part of his twenty-one volumes of collected works. Dudjom Lingpa taught for decades as an itinerant, unaffiliated master before his death in 1904, after which he was recognized as having emanated, most notably, through His Holiness Dudjom Rinpoché (1904-87). His teachings continue to be transmitted today through the Dudjom Tersar lineage.