I'm printing a collection of encounter maps for the Dungeon Master I used to play D&D with before I moved! There's a lot of beautiful RPG maps available online

I'm printing a collection of encounter maps for the Dungeon Master I used to play D&D with before I moved! There's a lot of beautiful RPG maps available online, so I want to pick 10-15 that should suit his taste, get them printed in a bigger format and send him as a surprise gift. This post actually reminded me to get to it soon if I want to make it on time!