Shangri-La is a fictional place described in the 1933 novel Lost Horizon by British author James Hilton. Hilton describes Shangri-La as a mystical, harmonious valley, gently guided from a lamasery, enclosed in the western end of the Kunlun Mountains. Shangri-La has become synonymous with any earthly paradise, and particularly a mythical Himalayan utopia ? a permanently happy land, isolated from the outside world. In the novel Lost Horizon, the people who live at Shangri-La are almost immortal, living years beyond the normal lifespan and only very slowly aging in appearance. The name also evokes the imagery of exoticism of the Orient. Shangri-La is often used in a similar context to "Garden of Eden," to represent a paradise hidden from modern man. It is sometimes used as an analogy for a lifelong quest or something elusive that is much sought. For a man who spends his life obsessively looking for a cure to a disease, such a cure could be said to be that man's "Shangri-La." It also might be used to represent perfection that is sought by man in the form of love, happiness, or Utopian ideals. It may be used in this context alongside other mythical and famous examples of somewhat similar metaphors such as El Dorado, The Fountain of Youth, and The Holy Grail.