In reply to Doug:
I doubt there'd be any scrambling near Trondheim it's all low, undulating hills. Plenty of hiking, cross country skiing and water ice (might be too late inthe year for some of these, dont know). If Romsdal is where the troll wall is then it's a bit of a drive away. There is some rock climbing near the airport, as well as the flatanger cave which is probably 2.5 hours away from Trondheim.