i'm working on a map of a very flat cave.
one of the few slopes in the portion we've surveyed so far is definitely a slope worth expressing on the map, but it also happens to be completely covered with flat, slabby breakdown. passage height is roughly 2', slightly lower in the middle.
besides putting a vertical deviation figure at the top and bottom, how on earth do i express this cartographically? i've tried drawing a large / exaggerated slope symbol, and i've tried drawing "contour lines" made up of small slope symbols using the caves.com illustrator brushes, but anything i do looks like crap because i'm putting it on top of breakdown.
any suggestions? should i be using some kind of stroke effect to "dodge" the area around the slope line so it stands out? if anyone has examples to offer it would be great.
(i want to be true to the nature of the cave as much as possible - in this particular section there is a choice of short paths, one a low slab belly crawl and one a more comfy hands & knees crawl that just happens to be accompanied by a foot or so of water.)