Easy mountainbike tour through the nice landscape of the Oberharz and around the Oker dam near Schulenberg The route starts with two moderate climbs towards Clausthal-Zellerfeld and leads to several ponds of the world cultural heritage 'Oberharzer Wasserregal', which are great for swimming in summer. In addition to dense spruce forests, green mountain meadows follow, from which views to the Hochharz and the Brocken are possible. It then goes over a long mountain to the wall of the water reservoir Okertalsperre. The route continues around the deep blue lake to the large main wall and then takes a short ascent back to Schulenberg.