According to biographers, H.P. Blavatsky’s path laid to Tashilunpo monastery (near Shigatse). A book "The Voice of the Silence", published for the request of Panchen Lama IX in 1927 by Chinese society for Buddhism study at Peking, reports that H. Blavatsky during several years was studied in Tashilunpo and knew well Panchen Lama VIII Tenpay Vangchug. Blavatsky also confirmed her living at Tashilunpo and Shigatse. In a letter, she depicted her correspondent a solitary temple of Tashi Lama near Shigatse.
S. Cranston asserts that, according to H.P. Blavatsky, it is not known would she was at Lhasa in that time, but V. Jelihovsky affirmed the follows: "It is reliably that she (Blavatsky) sometimes was at Lhasa, capital of Tibet, and also at Shigatse, main Tibetan religious centre … and at Karakoram mountains in Kunlun Shan. Her living stories about this proved that for me many times".
According to the biographers, last period of her living at Tibet H.P. Blavatsky has conducted in the home of her Teacher Koot Hoomi (K.H.). He helps Blavatsky to get to several lamaseries where any European was not before her. In the letter from October 2, 1991 she wrote to M. Hillis-Billing that the house of Teacher K.H. "is in the region of Karakoram mountains beyond Ladakh which is at minor Tibet and related now to Kashmir. This is a large wooden building in China style looking like to pagoda located between lake and a nice river".
Researchers believe that just at this time (during living in Tibet) Blavatsky began to study the texts which later will come to the book "The Voice of the Silence".
In 1927, one of the eminent explorers of Tibet and its philosophy W.Y. Evans-Wentz wrote in introduction to his translation of "The Tibetan Book of the Dead": "As concerning an esoteric meaning of forty ninth day of Bardo, please see about this in H.P. Blavatsky’s “The Secret Doctrine” (London, 1888, v.1, P.238, 411; v.2, p. 617,628). Late lama K.D. Samdup believed that in spite of malevolent critics of Blavatsky’s works, this author has undisputable proofs that she was well acquainted with the highest lamaist teaching, and for this she needs to get an initiation". Doctor Malalasekera, founder and President of the World Buddhist brotherhood, wrote about Blavatsky in a monumental "Buddhism Encyclopedia": "Her acquaintance with Tibetan Buddhism and also with esoteric Buddhism practices is indubitable". Thus, Japan philosopher and Buddhologist D. T. Suzuki supposes that
H.P. Blavatsky. 1876-1878
“ "undoubtedly Ms. Blavatsky somehow or other was initiated into deeper propositions of the Mahayana teaching".
http://en.wikipedia.org/wiki/Helena_Blavatsky