Here's some pictures from the glomma near koppang:-
http://www.fiskersiden.no/forum/index.php?showtopic=25588&hl=koppang
More pictures:-
http://www.fiskersiden.no/forum/index.php?showtopic=18818&hl=koppang
It seems to be full of grayling with a few brownies. Popular flies from what I've read seem to be the normal grayling flies e.g. parachute dries, PTN's, czech nymphs etc. Good allround flies seem to be Red Tag, Black Gnat. All flies in various sizes from 12 to 18.
As regards camping, there's Koppang Camping. Here's the website in dutch!
http://www.koppangcamping.no/NL/NL/Algemeen.html
There, you should have everything you need now!
