Chögyam Trungpa Rinpoche wrote the Sadhana of Mahamudra in 1968 while staying in the cave of Taksang in Bhutan. The Sadhana of Mahamudra invokes the wrathful manifestation of Padmasambhava, called Dorje Trolö, to help us overcome obstacles and confusion in our time.
Here’s three images of Allen and Trungpa:
Allen Ginsberg and Chogyam Rinpoche, Spring 1973 – Ginsberg Collection, Stanford
Allen Ginsberg & Chogyam Trungpa, Rinpoche, Macky Auditorium, Boulder Colorado, May 1972 – photograph by Bob Morehouse
Allen Ginsberg & Chogyam Trungpa, Rinpoche – Photograph by Karen Roper