Two days ago Espen and I decided to take an evening run to Hærfangkjerka. Read a lot about it http://www.norsknatur.no/boker/romerike/harfang.htm and seen plenty of pictures. I even have tried to find it myself, but back then I had to little time before it got dark, so I gave up. But this time of the year no problem. About half an hour running from Skjatvet http://www.skjatvet.no/, then 10 minutes of climbing on slippery rocks with moss, but finally there
Instead of climbing back down again, it is possible to find your way through the cave, but we did not try it out this time.
Nice view.
Been there, done that, most likely I will return with my kids, but have to wait until they get a lot older. To dangerous for small kids to go there.