From the parking space above the cemetery of Oberrasen you walk to the Oberstallerhof. At the bar follow the mark n. 5 on the left side to the Hochrautalm.
From the Restaurant Mudler follow the mark n. 31 to the Mudler pond and go ahead to the Hochrautalm hut. Very rewarding also the climb to the Lutterkopf (2.145 m).