In Secret Tibet (In disguise amongst lamas, robbers, and wise men) is a travel book by author Theodore Illion, first published in German in 1936 and then in English in 1937.

[1][2] In 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.

[3] 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.

Perhaps the most incredible chapter relays an encounter where Illion observed a miraculous healer help a traveling passerby who had been struck by a falling stone which:"..tore savagely down his right arm.. tearing away the skin and inflicting a deep flesh wound at least twenty inches in length.

This is a quote from David-Néel's Magic and Mystery in Tibet, (published five years previously) which recounts an earlier meeting she had with a lung-gom-pa lama: "He seemed to lift himself from the ground.. His steps had the regularity of a pendulum.. ..the traveller seemed to be in a trance.