Thanks Quenten :)

A crater sample.

The water in this style is drawn over the top of everything else, like in city styles, so it's easy to add a lake.

I am thinking that the structure markers might be a little too large at this continental scale. What do you think?

For reference, the larger crater is 90 miles (144 km) across.

Have you tried moving the end node of the cave wall section, and while moving it using F9 to snap to the closest node/point on the corridor end?

Or, if you have any experience with the trim tools in the Edit menu, you could try hiding all but the wall sheet(s) and use the tools to trim the ends to each other. Instructions are given in the command line depending on which tool you use.

Is this better?

When the ocean was dark the ice looked white, even though it was blue.

I forgot to thank you, Jack. Thank you :)

Thanks :)

I've adjusted the badland fills. The backgrounds now all match, but I'm a little unsure of the patch colours.