On its broad peak stands a solid summit cross, the panorama is comprehensive and there are particularly good views of the Ellmauer Halt, the highest mountain in the range, the Treffauer and Lake Hinterstein.

The Sonneck rises in the western part of the Wilder Kaiser on the main crest between the Hackenköpfe and Kopfkraxen in the west and Ellmauer Halt and Treffauer further east.

After that it becomes steeper, running past the southern side of the Sonnenstein, then across slopes of mountain pine and open schrofen terrain, a demanding section up to the Kopfkraxen, a lower peak.

The trail runs through the Kaisertal valley past the Pfandlhof farm and St. Anthony's Chapel (Antoniuskapelle) and reaches the Anton Karg Haus in Hinterbärenbad after 2½ hours.

The whole crossing from the Sonneck to the Scheffauer takes about 3 hours; and must be followed by a descent to the Kaindl Hut or to Lake Hinterstein.