Between Genk and Hasselt lies the De Maten nature reserve that will play the leading role in this walk today. First you walk through the Diepenbeker forest and then via the Stiemerbeek to the Slag mill. From here it continues along a swampy nature trail that has beautiful views of the ponds of the nature reserve. Just past two bunkers that were part of the line of defense during the Second World War, we stop briefly at a bird watching wall that offers a beautiful panorama of the Augustinian ponds.