Mountainbike tour starting in Altenau on the Brocken along reservoirs, quarries, waterfalls and through the Nationalpark Harz The route starts with beautiful views along the water reservoir Okertalsperre and then goes up to the Huneberg. In the active quarry located there, mainly diabase rock is extracted, which is mainly used for road construction. From the quarry are already several view points with a view to the massive mountain slopes of the Brocken. The route leads from here into the valley Eckertal, along the Radau waterfall and up to the water reservoir Eckertalsperre. The scenic ascent to the highest mountain in Northern Germany begins here, which is one of the most beautiful climbs in the Harz with wide views to the Harz foreland. From the summit of the 1,142 meter high Brocken, the route leads downhill through the Nationalpark Harz and then through dark green forests back to the town Altenau.