Recently I had the pleasure of discussing maps in roleplaying with Johnn Four.

Johnn is a  a professional RPG author with 13 published books and three online courses on how to be a better game master. He co-wrote the Dungeon Master's Guide II, founded and anchored the GM Toolbox column in Dragon Magazine, and have been publishing the Roleplaying Tips Newsletter for GMs - 700 issues and counting - since 1999.  

You can find out more about what he doing here: https://www.roleplayingtips.com