Shardza Tashi Gyaltsen (1859-1935) was born in the Kham region of Tibet. An unusually gifted child, he became a monk at age nine. At thirty-four, he retired to a mountain hermitage where he passed the rest of his life in retreat-meditating, writing and teaching students from both Buddhist and Bonpo backgrounds.
Lopon Tenzin Namdak was born in 1926 in Eastern Tibet. He is the founder and Master of Studies of the Bonpo monastic colleges at Dolanji, India and Kathmandu, Nepal.

Preface	7
Introduction	13
Biography of Shardza Tashi Gyaltsen	17
Heart Drops of Dharmakaya: The Text	31
Preliminary Practices	35
The Practice of Trekcho	51
The Practice of Togel	75
Phowa and Bardo Practices	115
The Rainbow Body	135
A Short History of Bon	139
Biography of Lopon Tenzin Namdak	147
Illustrations	155
Bibliographic Essay	161
Tibetan Text	165