Originally Posted by
Timelord
Probably Lake Geneva and they were all lost!
Difinitely not lost, that implies awareness that one doesn't know where one is. In that case they knew exact where they were, over a lake with a fountain. They just didn't recognise it for where it was ☺
I think upper air was not very busy then. In one occasion over France minding our own business at 450, we declined to tell the French our aircraft type except military 4-jet. They were having none of it and we were intercepted by 2 Mirage and 2 CF104.