The bottom of the upper Simme valley has the characteristic of many mountain valleys: a flat bottom. This flat bottom is the result of the valley having been filled over time with alluvial deposits. It is only when you reach the bottom of the cirque closing off the valley end that the landscape changes completely. You then find yourself facing a rather large change in the terrain. It is over one of these bumps that the Simme falls (Simmefäll) are located. The falls that we know today are the result of work done in the 17th century, the aim of which was to limit the importance of floods. It was during this work that the rock was cut to offer the torrent a different passage from the original.
From the end of the valley, there are two possible paths. However, it is advantageous to follow the one that runs closest to the falls. You then suffer from quite strong spray in places. Further up, at the Barbarabrücke, you are thoroughly splashed. After the bridge, you find the other path, which then follows a steep road. After reaching a much flatter area, you soon reach the alpine hut at Rezlisbärgli. It is then worth going to have a look at the Sibe Brünne (the seven fountains), where the water comes out directly from the rock.
After this place, you continue for a while in a flat basin, before climbing steeply towards Langermatte. This place, where there is also an alpine hut, is on a ridge dominated by the Firstli, a steep ridge that was used by one of the variants of the Rawylpass.
You then simply must descend towards the Iffigbach to reach the Iffigenalp. The descent from Langermatte is steep in places, but the path is good, and you quickly lose height. Iffigenalp is at the crossroads of the paths leading on the one hand to the Rawylpass and on the other hand to the Schnidejoch, another alternative for crossing the mountain range.