A member of the A Song of Ice and Fire forum has poured an incredible amount of work to create an animated timeline map for the series. Ser Mountain Goat’s map is not anywhere near done, as of yet, but there’s enough there to see the possibilities that the map will offer, once it tracks multiple characters as they criss-cross Westeros. His FAQ goes into great detail about the origins of the map, his sources, and his methodology. We’re very much looking forward to see it develop.
If you’d like to comment on the map, there’s a thread dedicated to it.