geographically(map wise) how much is different between 3.5 and before Realms and 5th Edition Realms?, what I’m asking is can I use 3.5 map in my 5th ed campaign? Of course you can use a 3.5 map for your 5e campaign. Maps, in the Realms and elsewhere (even in our modern real world; ask any sailor about shoals not on charts, or islands that appear or disappear from maps or the actual sea) are notoriously unreliable.#Realmslore

— Ed Greenwood (@TheEdVerse) April 28, 2020