Mapping the caverns

[ffutures]

For my "country cave mystery" adventure I've designed a cave complex, originally a mine, which realistically would have a lot of overlapping sections at different depths. Mapping that sort of thing is a bit of a sod, what I've ended up doing is draw it so that all of the areas are linked to a common vertical shaft at different depths - I've then drawn each level separately, and a plan of the complex as a whole, with the levels in different colours, at smaller scale.

I think this works, but the plan of the complex as a whole isn't as clear as I would like. Anyone got any thoughts on ways I could improve it?

Plans of the top level and the complex as a whole are behind the cut