I parked at Øyungen and headed up path which goes up the eastern side of the lake. As I got to approximately the right place, I saw a cairn with two poles sticking out of it further east, which I take to be the right place, however there were two other contenders further on. So I am not sure if what I thought was the peak, was in fact it. But I went through all possible points, so one must be right. It took about 1 hour from the car.