About Dudjom Lingpa:
Dudjom Lingpa was a well-known modern meditation master, visionary, tertön of the Nyingma tradition of Tibetan Buddhism and a Dzogchen master of principal importance (particularly in the area of "refining perception") at his time. A belief exists about his ability to receive direct transmissions (Wylie: nye brgyud) of the mindstream or "heart-mind transmission" (Wylie: thugs brgyud) of a number of lineage holders such as Sri Singha, Saraha, Vajradhara and Manjusri.