In Secret Tibet

From wikipedia entry:
n 1934, the author set out to explore Tibet, dyeing his face with iodine and oil to avoid detection in a country that was closed to foreigners at the time. Theodore Illion wrote three books about the country, Darkness over Tibet was also published in 1937 and The Tibetan Art of Healing came out in 1975.[2] In Secret Tibet primarily focuses on the Tibetan people and their thoughts and customs; Illion enthusiastically relates tales of his encounters with nomads, bandits, lamas, and other holy men.