The Massa Gorge is a 6.5 kilometer long gorge that begins in Blatten near Naters at the Gibidum dam. It is an impressively unique natural phenomenon made of white-polished marble, formed by the ice masses of the Great Aletsch Glacier and the meltwater of the Massa. The total height difference of the gorge is 600 meters.
The hiking trail follows the course of the historic Suone Riederi. This was first mentioned in 1385 and brought the meltwater from the glacier to the fields near Ried-Mörel until the 1940s. The path carved into the rocks leads along the Massa Gorge at lofty heights. This adventurous hike is only recommended for people with a head for heights. The steepest rock face, around which six long canals were built at dizzying heights until the end of the 1930s, is now defused by a short tunnel, although there are still some well-secured but exposed areas to overcome. The breathtaking views over the Rhone Valley and the Valais Alps are a delight and the mighty gorge, with appropriate water flow, can impressively convey the power of this element.