To be precise, a map of the Kingdom of Camelot as put together by the creators of BBC’s Merlin.
This doesn’t explain how the geography seems to move about in direct correlation to how long the script writers need Arthur/Merlin/the Knights etc. to be on the road but it does give a little insight into how it all fits together.
It does however give credence to the three days it took Arthur and the knights to get to the Isle of the Blessed in S4E1/E2 given that they would have had to cross a mountain range and the Valley of the fallen Kings. However I think that the script writers might have swapped the mountain and the valley for the majority of the plots involving the Valley as Arthur and Merlin seem to be able to get there an back in a day.
Anyhow, it’s an interesting insight into how the landscape was first envisioned, regardless of whether it actually works or not!