[quote=@Ragenaut]
I'd like to make a crazy, demonic/black magic civilization.
[/quote]

Perhaps you need to re-review the OP again.

[quote=@Ragenaut]
I'd like to set them In a heavily forested tundra with active, volcanic mountains. Is that possible?
[/quote] 

There's plenty of mountains around the map, implying tectonic activity. I'm sure there's a geographically active region somewhere in the mess with some activity like that: geysers, mineral springs, actual volcanoes. However, I can't say much for it being a "heavily forested tundra" since these two biomes in my understanding are not mutually inclusive, but you could probably figure out an area where you can lay yourself out over one or two of them.

If you need some help in figuring that out, then look at the latitudes I included. The southern-most is about the same as where rests Helsinki on our map, and the other bisects the White Sea. There's some four-hundred miles between both.