Wienert took four sets of geomagnetic data. Krause studied Tibetan wasps. Schäfer observed Tibetan rituals, including sky burial, and even bought some human skulls. The researchers took stills and film footage of local culture, notably the spectacular New Year celebrations in which tens of thousands of pilgrims flocked to Lhasa. Bruno Beger recorded the measurements of 376 people and took casts of the heads, faces, hands, and ears of 17 others, as well as fingerprints and handprints from another 350. To carry out his research, he posed as a medicine man to win the favour of Tibetan aristocrats, dispensed drugs, and tended to monks with sexually-transmitted diseases.