I've been a long time reader of the invaluable information here in this forum and I've always found my inspiration in the maps published here. But now I am struggeling with a map design issue myself and I can't find the "right" technology to achieve what I want.
I'm creating a map for the downtown of a city. The city has a rift which parts it more or less into two halves. Since the map aims at tourists it is quite critical to show the height differences between up (300m) and down (250m). It's not about the actual height difference but more about showing the steepness and the fact that there are substantial differences.
Usually I'd do this by creating a hillshade and overlay the hillshade with my data. This works fairly well for most maps above 1:20.000 or so. But since the scale's much larger I'm struggling to create a good visual approach. I've attached a screenshot of the map as it is right now, and you can investigate further on Google Maps (try the options for the terrain). The rift has some really steep cliffs and I am out of ideas. In addition to the naturally created, steep steps there are also some remarkable elements made by men, namely the fortifications done by Vauban.
So in the end I am looking for ideas on how I can substitute / enhance the shading technique I am using right now. The hillshade visible in the screenshot was created by rather accurate contour lines, so they reflect to some degree the complexness of the terrain, but the algorithm used to create the hillshade/DTM frequently fails in some locations where the changes in the terrain are too harsh.
So I am asking what other techniques I can use to show the terrain, like maybe hachures and what your experience with these technologies is?