The word root guru has a sacred meaning, that my teachers define in a very specific way: the person who not only tries, but succeeds in bringing about a complete change in your mind to such an extend that the grip of duality is loosened and that the nature of mind is totally laid bare in its naked state and can be accessed whenever remembered for the rest of your life. Perhaps the meditator only finds out many years later who the primary guru was.
The power of bhakti is a swift path for those who are able to harness this energy in their spiritual awakening. The power of love, the power of the heart, can unlock an incredible force within us which cuts through all our conceptual thoughts.
Taktsang is indeed a special place. It is the most holy and revered temple in all of Bhutan, perched dramatically on the edge of a cliff with a 900 meters drop beneath. The Indian yogi Padmasambhava, affectionately known as Guru Rinpoche in the Himalayas, flew to this cave on the back of a tiger.