Not really, you can use some tricks from IRL topography to handle them...

• Contour Lines can be used to mark a region on an different level (usually higher).

https://en.wikipedia.org/wiki/Contour_line

• The "standard topographics symbols" are easier to parse and may help your maps: [https://www.topozone.com/topographic-map-legend-symbols/]

• Icons can be used to mark a POI that will shift you to another map (use numbers or letters)

• Some Icons can include a specific "height". I.e. A Mountain = +3, a chasm = -2, a valley/lake is -1 and so on.

• If a small area overlaps use a "cutout" to show the different levels.