t's managed to survive without one for five millenia, but the owners of Stonehenge are now on the lookout for a general manager to run famous World Heritage Site. The successful candidate, whose 'office' will be the giant pre-historic stone circle in Wiltshire, will be required to oversee the 5,000-year-old monument's 'exciting new future'. Owners English Heritage have described the site currently as a 'miserable and desperate' experience for tourists, with Portakabins housing the visitors' centre. Stonehenge is seeking a general manager for the first time in the monument's 5,000-year history to oversee its 'exciting new future' The successful candidate will be required to spend some of their time mingling with visitors at the World Heritage Site, while the rest of the time will be spent at the new visitors' centre But a new £27million museum and exhibition gallery and large restaurant will open by the end of this year about a m