Bone carving, one of the most ancient crafts of Tibet, is here treated in the context of Mahayoga Tantra. Since the first missionary report from Tibet in the letters to Rome(17th-18th century) the use of skulls and bones in Tibet was described as sorcery involving all sorts of magic operations, and referred in the context to head hunting practice and ancestry cults. For the first time a full and thorough ethnohistorical investigation is presented, combining the ...