This trail is mostly ridden by bikers who did the Holy Hansen
trail. After climbing about 20 minutes to the trailhead, the Aigen Trail starts with nice berms, some doubles and small jumps. Quickly after the iron gate, the trail continues on the left and ends into a gravel road.
Cross the gravel road and keep on riding downwards on the sign marked "n. 4" and follow the natural trail with some short climbs.