Originally Posted by American Maid
Just to refresh my memory, how do we know there is a battle in Iceland?
well the quote above up to 300 crew plus another 200 Icelanders, is an indicator, it was also reported on the site you linked in the What we know thread, and other places that there was large battle scene filmed in Iceland, involving Thor and Loki, and we know AAA and Chris Eccleston was there also. I seem to remember reading somewhere the location of that was in a valley that sounded like it might be representing Svartalfheim. Possibly that Dómadalur Valley mentioned above.