Moderate mountainbike tour from Hahnenklee via the city of Goslar towards Hochharz and back through the beautiful Oberharz The route begins with a long descent along the Granetal-valley to the city of Goslar. There it leads along mountain meadows with a beautiful view above the city into the Oker valley. Here follows a long ascent from the deep valley to the Huneberg. In addition to the quarry on the Huneberg, there are several points with a view to the massive mountain slopes of the Brocken. In the active Huneberg quarry, mainly diabase rock is extracted, which is mainly used for road construction. The route goes around the quarry and leads through the Hunetal valley down to the water reservoir Okertalsperre. From here it goes through dark green spruce forests to the hilly plateau around the town of Clausthal-Zellerfeld, where the Brocken can be seen several times along the way. Along ponds and lakes it goes the last kilometers along a path beside a canal of the world cultural heritage 'Oberharzer Wasserregal' back to Hahnenklee.