As a junior Nav in the 60s I was on Argosies in Aden and the route to Muharraq had to avoid Saudi airspace and therefore routed via Fahud in a huge dog leg. As diplomatic tensions eased with our imminent departure from Aden direct flights across the empty quarter were authorised to exit at Doha in the desert state of Qatar. (Whatever happened to that place). Miles out into the Rub al Khali and me thinking what a ****hole to die in the skipper Ken Maggs said "Navigator pass me your topo" I had the requisite stack of beige 1: mill maps and hastily scribed the track across it. A few minutes later the map was passed back with a pinpoint and time on it. "WTF" I ventured. "Bedouin Legion outpost" he said. Ken used to fly that route in Wellingtons.