My experience of volcanoes is limited to recent Icelandic and Hawaiian erruptions - the last 4 years of them anyway, so the fill reflects at least the mood of what I've seen of the relatively flat ground around those eruptions, which seems to be surprisingly pale except where vehicles off road and turn the surface to reveal the darker colours, but I'll keep it for something else and try a volcanic-coloured version of the tundra fills.

Another reason for making it relatively pale is that the darker the fill is, the darker the symbols have to be, and the darker the symbols are, the less effective the map files are, to the point where you can hardly see any shading at all. Map files work best on mid-tone symbols like rooftops. We'll be ok with the regular mountains because they aren't as dark as volcanoes, but the volcanoes are certainly proving to be quite a challenge.

There wasn't much of a highlight on the lit side. I've tweaked them to show more light there now. Do they still look like holes?

Wyvern - I was just thinking about the ridges. I put the mountain shape on the hill shape sheet instead, which has a much softer blur.

There will be a range of volcanoes to play with - most of them smaller than these. These are supervolcano size.

Calibre - That's a shame. I wouldn't change it too much - the volcano symbols won't match. But on the bright side, these are mapped symbols, so as long as you have them on a sheet of their own you can use colour changing sheet effects on them too.

Here's a version of the same volcano (the one to the north pasted twice) with fuzzy edges. Is it better? Worse?

I did some test mapped volcanoes. The thing is, though, that you have to change the inclination of the global sun to get a more noticeable shading effect, which I think is affecting the Bevel, Lighted effect on the bevel mountains.

This is with the sun inclination at 30 degrees.

And this is with the sun inclination at 60 degrees (the default setting).

I'm a bit undecided about which of these is better for both.

(I know they are really a bit big, but there will be smaller ones.)