I like your map Torsten.
I hope Alistair’s solution is what you were looking for.
I have some questions so that I might make such a nice map.

1. How did you obtain the ground profile?  I presume you may have walked it with a gps to obtain ‘real’ survey data or extracted it from Google Earth.
2. I like the line you used for the ground profile.  Would you share the code for that?
3. I like the layout of the text information boxes.  Would you share an example of the code for those? (cave name, location, surveyed, thanks, exploration history)

Regards
Bruce