This is the account of Sir Ranulph Fiennes' 24-year search for the lost city of Ubar, the Koranic version of Sodom and Gomorrah hidden in the Arabian desert. The existence of Ubar has been reported by many travellers over the centuries, including Marco Polo, Ibn Batuta and Bertram Thomas. Having searched for the site for many years, Sir Ranulph teamed up with an American film-maker in 1968 to track down the likely site. A complete excavation is being carried out with the support of His Majesty Sultan Qaboos of Oman in the remote Bedouin village of Shisr and will take up to ten years. The author's other books include his autobiography "Living Dangerously" and "The Feather Men".