Most are in the north. The only through trip I have done further south is Trollkirka between Molde and Kristiansund, and that is no epic. My kids did it as toddlers. Including the ladder.
Walking up the bloody hill to Raggejavreaige with all the rope in caving gear is the hardest bit for sure. It?s the bit I remember best, especially as I did on my own the first time to find it and ended up wading along the shore in the dark to get back to the village. The Sami are nice people and live a very different life to other people. Very sort of dreamy.