The age of a piece of jawbone found at Kent's Cavern in the 1920s has been reassessed, and is said to 'represent the oldest known anatomically modern human fossil in northwestern Europe'.
It's mad to think that the period of warming was 'only' 1000yrs. A short period from our retrospective view, but at the time, it would have seemed to them that people had lived there forever. 50 generations would be long enough for it to seem like that's the way it had always been, and would always be.