The Shambhala ideal is described in detail in the "Shambhala Sutra", a historical text written by the Sixth Panchen Lama which describes some of the Shambhala locations as being in Ngari, the western prefecture of Tibet. Folklore from the Altai Mountains describe Belukha Mountain as a gateway to Shambhala. The Kun Lun Mountains (崑崙山) offer another possible place for valleys like the Shangri-La, since Hilton specifically described the “Kuen-Lun” mountains as its likely location in the book, however, Hilton is not known to have visited or studied the area. Parts of the Kunlun Mountains lie within Ngari, mentioned in the "Shambhala Sutra". In a "New York Times" interview in 1936, Hilton states that he used "Tibetan material" from the British Museum, particularly the travelogue of two French priests, Evariste Regis Huc and Joseph Gabet, to provide the Tibetan cultural and Buddhist spiritual inspiration for Shangri-La. Huc and Gabet travelled a round trip between Beijing and Lhasa in 1844–1846 on a route more than north of Yunnan. Their famous travelogue, first published in French in 1850, went through many editions in many languages. A popular "condensed translation" was published in England in 1928. Today various places, such as parts of southern Kham in northwestern Yunnan province, including the tourist destinations of Lijiang and Zhongdian, claim the title. In modern China, Zhongdian county was renamed Xiānggélǐlā (香格里拉, Shangri-La in Chinese) in 2001, to attract tourists. Hilton visited the Hunza Valley in northern Pakistan Kashmir, close to the Chinese border, a few years before "Lost Horizon" was published; hence it is a popularly believed inspiration for Hilton's physical description of Shangri-La. Being an isolated green valley surrounded by mountains, enclosed on the western end of the Himalayas, it closely matches the description in the novel; also, in an ironic reversal on the story, due to increased exposure to ultraviolet radiation, inhabitants of the high-altitude parts of the valley appear to age quickly. Places like Sichuan and Tibet also lay claim to the real Shangri-La. In 2001, Tibet Autonomous Region put forward a proposal that the three regions optimise all Shangri-La tourism resources and promote them as one.