We don't really use fell in Scotland. And whilst I kinda object to our moors having to be tagged as heath, it is heather moorland. So that's the accepted tag. Tundra seems an odd tag to use. It's neither cold, nor high. The closest we have to the general idea of tundra is the Cairngorm plateaux. 

Anyway, either reconsider, or if you are done with the area I can take it over. 

I just didn't want to tread on your toes. 