Route: from the car park at Kalterer See lake, continue north to the Geier restaurant. Behind the restaurant, a narrow trail leads to the north into the orchards. Walk along these and turn off to the right in an easterly direction following the markers. At the slope on the eastern side of the valley, turn right, passing by the hotel on the left to the Klughammer road. First follow this road, then continue on a trail above the road.

This trail ends at the southern end of the lake. Cross the road to join the Nature Discovery Trail (Naturerlebnisweg). At the end of this nature trail, turn right onto the so-called Kuchlweg trail, hiking to the vineyards on the western side of the valley. Just before the wine road, turn right into the trail through the field, following it until you reach the point where the wine road curves to the right. Cross over and now follow a trail through the field once more. Then follow the footpath next to the wine road to the church of San Giuseppe al Lago/St. Josef am See (Kirche St. Josef). Take the farm track to the right back to the starting point of the hike.

This is an interesting hike from a natural history and geological perspective. It leads to the UNESCO World Heritage Geoparc Bletterbach geological park. Hiking through the impressive canyon and the opportunity to immerse oneself in the history of Earth’s creation are the highlights of this unique tour.