"The Yogis of Tibet": The Roots of the Tantric Tradition in Tibet.
Sat Nam,
This is a very powerful video, both informative and really interesting. It was made because the kept-secret-for -millenia Yoga practice of the Tibetan Yogis and their culture has been assailed by the Chinese efforts to eliminate the Tibetan culture. The Dalai Lama asked the Yogis to come out of seclusion, and in at least one case to stay alive, to share these teachings.
You will note that some of their practices and philosophy is of a similar root to our Kundalini Yoga.