This map was made by us but based on the maps by James Sinclair, Richard Geiger, and Keith Curtis.
The map is updated for A Feast for Crows and we have added a scale to it based on the 100 league length of the Wall as stated several times in the books. GRRM has also confirmed that the Wall can indeed be used as a scale.
Copyright ©Richard Geiger, Voyager Books and George R.R. Martin