Marmorslotlett is about a 45-minute drive from Mo i Rana. You take the E6 from Røssvoll and drive 30 kilometers towards Melfjordbotn. At a bridge, you do not drive over the bridge but straight ahead for 4 kilometers to the farm Fisktjønna. Here you park the car, walk the path past the farm and go to the marble castle in about 25 minutes. After about 15-20 minutes of walking in the forest, there is a sign showing where the road to the marble castle goes.