Ved Enden Av Regnbuen

From rv 23. drive to Røyken and past the train station. Turn left onto Heggveien and continue straight ahead until the top of the hill. Parking is about 40m after the roundabout.

Continue on foot on the tractor trail on the right for about 150-200m until you get to a fork in the path. For the Storhella sector just follow the cleared path in the undergrowth on the left of the fork. To get to underland you continue on the left path for another 100m and cross over the area cleared by lumberjacks (lots of undergrowth).