This impressive day hike takes you from Grimsel Hospiz to the forefield of the Unteraar Glacier via the north side of the artificially dammed Lake Grimsel.
This trail winds through a landscape shaped by the glacier, where you can discover many traces of the glaciation that took place during the Ice Age. On the northern shore of Lake Grimsel, a picturesque patchwork of moors and rocks opens up before you: this is a typical roche moutonnée moorland landscape. Here, on the mostly very steep slopes, the Ice Age glaciers carved a multitude of depressions, rounded rock outcrops and ridges (roche moutonnées) into the granite. Today, the depressions have formed an abundance of small and very small bogs. There are also some larger bogs, including the Mederlauwenen Fen, which covers an area of more than 5 ha, making it the largest fen on our World Heritage Site.
To return to Grimsel Hospiz, follow the same route back again. At the start and end of this hike, you will also find the UNESCO World Heritage Visitor Centre, which has a special focus on hydroelectric power.