Something more like this?

You were helpful, Don.

With a bit more practice we can be a team :)

I spent the day being distracted by structure symbols. I went through all kinds of overcomplicated bitmap variations, but eventually came back to simple varicolour vector ones. How do these look?

I might put a black line around them, but I think this is probably a case of more is less. Simple and clear looks a lot better than complicated.

Thank you, Remy, for the clear and concise instructions in the Tome. I had long forgotten how to make shaded varicolour vector symbols.

I think Wyvern was on about the prominence of the lip, but you've just opened a new door.

Yes, I can do one that goes on the same sheet as the hills that will behave like the hills. This one is for rocky/arid places mainly, or as a relatively recent crater in an otherwise lush environment.

Maybe this is slightly better?

Or even more discontinuous?