I don’t own a car, so living in Oslo with access to public transportation I love the fact that places like this is available within a very short travel from downtown Oslo. The day was spent drinking coffee next to the stream, fishing for small trout with this quill & hackle pattern, but when I got to this tunnel (it goes underneath a road) I was stuck… I tried a lot of differnent midges and mayflies, but nothing would appear or be interested in anything. Then I put on a white/green variation of the CDC&Deer and instantly I had 3 trouts on: all taking just in the exit of this tunnel.
With all the foam you had to hit outside the patches of white, if not the fly was just hidden by it.
For rivers like this (if you get a 500g trout here it is big!) I bring my Sage TXL-F #1 and Click 1. A great combination to get out those #18/#22 with a 6x/7x tippet underneath branches and trees along the river.