Large dungeon complexes and even “megadungeons” have become a stable of fantasy RPGs. But they are difficult to map out, since they tend to be complex, three-dimensional structures. While mapping them in 5 ft. squares may be possible, that doesn’t give a good view of how all the different locations connect with each other.
So I am curious: What are your favorite visualizations for megadungeons? How did they help you as a game master (or player) to understand how their whole environment is structured?
I don’t map them out like this. There is a general overview, and a bunch of maps showing e.g. local caves or dungeons, but the long passages are not coveted by maps. If push comes to shove, I make something up on the spot.