These parabolic dunes originated towards the end of the last ice age. Large parts of North and Central Limburg were then covered with a layer of cover sand. The wind blew up this sand into sand ridges and horseshoe-shaped dunes. On the highest parabolic dune is a 12.5 meter high lookout tower with a panoramic view. The area that is visited consists of a succession of forests, drifting sands and heaths, but also the fens. These come in all shapes and sizes such as the fens in Quin, Zevenboomsven and Esven. As further sights you will pass a small Maria chapel along the Paoterskapelletje. The original chapel was built around 1880 by order of the Jesuits Bleyenbeek. In 1948 the chapel, damaged by war, was restored by the owner of Bleijenbeek castle. Over the years, the building collapsed due to deliberate destruction. In 1986 the chapel was restored by the spontaneous efforts of the inhabitants of Afferden. Furthermore, one comes at the end of the hike past a large chapel built in 1909 that at the rear connects directly to a small chapel from 1612 rebuilt in 1688.