Get a runic font anyway. You can use it to give you an idea of what the characters are - what shape you need to draw.

They're just sheet effects.

It's not too difficult to add a third of your own, though I'm going to stop at 2 for the template or it just gets a bit too heavy to explain everything in what is supposed to be a brief mapping guide.

Something more like this?

It depends what season you see it in.

Work on the ridges continues, but I took a break from that to consider how not everyone will like the bright red and gold tundra, so I added two HSL sheet effects to those sheets so you could take your pick between bright and natural.