Schijenflue, Mountain peak at Austria-Switzerland border

Schijenflue is a 2,627 m limestone summit on the Austrian-Swiss border in the Rätikon, part of the Sulzfluh group. Its east and northeast sides drop in karren-scored slabs to the Tilisunaalpe, while the west face above Partnun forms vertical walls that give the mountain its climbing importance.

The first documented ascent was made in 1891 by Eduard Imhof and companions via the south ridge from Partnun. Climbers only began tackling the vertical west wall routes in the mid-1950s, using the technical climbing style of the time. The normal route today runs from the Weissplatte as a ridge walk over a deep notch, at UIAA grade I.

The mountain paths follow sections of the Walserweg trail, which mirrors routes that the Walser people once traveled through these alpine regions. These paths show how communities historically moved through high mountain terrain.

The normal route starts from the Weißplatte to the north, following the ridge over a deep notch to the summit at UIAA grade I; the Tilisunahütte at 2208 m serves as a base, with about two hours of walking time. For the vertical west-wall routes, Partnun is the base. The Schijenfluh Umrundung (Swiss route 702) circles the mountain.

The mountain features reef limestone formations created during Alpine mountain building, which have produced climbing routes with grades up to UIAA VII+. These rock formations make the peak a destination for experienced climbers seeking technical challenges.