Oslo is surrounded by forrest and great walking routes and there are many of these cabins. You can rent a bed for just 200-500 NOK (depending on membership and no-service cabins, self-service cabins or staffed lodges). Katnosdammen has no-service, you just book a bed and bring your key (you get it as a member).
Knowing that 11 of the cabins 17 beds were booked it was a surprise for us to only meet two others when we arrived in the dark after a 13 km long walk. But one hour later 6 italian men came out of the dark and in to the cabin. And it was such a random surprise. We were expecting a Norwegian family on their autumn holiday or just another bunch of people escaping Oslo for the weekend.
Because, Katnosdammen is a beautiful spot and a very nice cabin, but the walking trip there is not the most exotic or exciting. Great for people like us living close by, not a route you travel far to take. So the six guys coming through the door took us by surprise. 4 of them flew in from Rimini that day, starting straight on the walk. And they had backbacks filled with Grappa, Prosciutto, sausages, cheese and wine. All brought from Italy the same day.
The Italian hospitality was very much intact so the whole evening turned in to a great meal and our Chili con Carne was followed by amazing fresh Prosciutto, Grappa and cheese. Around the table in the deep forrest we had the exotic element of people speaking Italian more the Norwegian. It was actually kind of surreal, because it was so unexpected. But such a great evening!
The next day we walked about 25 km back to Oslo, all tired but happy. The Italian guys spent the weekend at Katnosdammen. I'm glad we helped them get rid of some of the stuff in their backpack as they were also planning to walk the 25 km back to Oslo on the Sunday :)