Yard of Lower Battery

On the occasion of my visit to this fort I should say next: at present (2011-12), fort Oscar-Fredriksborg is closed for visitors because of repairs and global reconstruction. I could entered in by chance, during the lunch break of construction workers, so the photo's quality and coverage are fragmentary and incomplete.
PS 2013: I've re-visited the fort and filmed near to all interesting inside of it. Reconstruction is not over, but for groups the fort is open...