>>96467685
>>96467685
As for the layout, I have an obsession for 3d features. Stairs going up and down more than one level, sloping passages, chasms, underground rivers, sections of a shallower level that can only be reached from a deeper level apart from secret doors in places where players are unlikely to look, and so on.

My layouts are so complex that I find I have to draw one extra map between each pair of levels to show myself all the vertical connections between the two. E.g. picrel