The darker the age, the more desperate we are for illumination. This is certainly true of the tale of Shangri-La, which differs from other myths in that it's a largely modern story. In 1933, British novelist James Hilton published Lost Horizon, which became an instant hit with the public. It follows the fortunes of a group of Western travellers whose aeroplane crashes in the remote, unexplored part of the Himalayas that we now know as Tibet. The group find themselves in an earthly paradise, where materialism, modern cynicism - and the threat of war - are unknown. Despite its modernity as a popular myth, the notion of an earthly paradise beyond the Himalayas had been known to Western scholars for centuries.