(2003, p. 24) tells another legend in which the grave was re-discovered 30 years after Genghis Khan's death. According to this tale, a young camel was buried with the Khan, and the camel's mother was later found weeping at the grave of its young. Japanese archeologist Shinpei Kato has likewise recounted the tale of the burial of the baby camel, so the parent could lead the Khan's family to the tomb when needed, as being documented in at least one ancient Chinese text. According to the tradition of the Yuan dynasty, all the great khans of the Mongols were buried in the area around Genghis Khan's tomb. The site's name in Chinese was Qinian Valley (). However, the concrete location of the valley is never mentioned in any documents. Modern research More recent scholarship suggests that the burial place of Genghis Khan lies somewhere in the vicinity of the Mongol sacred mountain Burkhan Khaldun (roughly ). This was the sacred place where Genghis Khan went to pray to the sky god Tengri before embarking on his campaign to unite the Mongols and other steppe peoples. After the rise of the Mongol Empire, it then became known as Ikh Khorig, or the Great Taboo, with only the Mongol royal family, or golden family, being permitted entry to the area. In all, a 240 square-kilometre area was sealed off by the Mongols, with trespassing being punishable by death. Even in the Soviet era, the area remained restricted out of fear that the mountain could once again become a site of pilgrimage or a focus for Mongol national identity. The Ikh Khorig has also been reported as being traditionally guarded by an Uriankhai tribe called the Darkhad that were exempted by the Mongols from taxes and military service. Such guarding of an imperial grave site "undermines the folkloric suggestion that the soldiers who witnessed the funeral were executed.” Expeditions and investigations In 1920, the French diplomat Saint-John Perse led an unrelated expedition through Mongolia with Chinese Post general director, Henri Picard Destelan and Dr. Jean-Augustin Bussière, in the footsteps of Genghis Khan. In 2001, a joint American-Mongolian expedition, organized by a retired Chicago commodity trader Maury Kravitz and assisted by Dr. D. Bazargur of the Genghis Khan Geo-Historical Expedition, found a walled burial ground on a hillside near the town of Batshireet. The location, 200 miles to the east-northeast of Ulan Bator near