Wiss Platte, Mountain summit in Rätikon range, Austria and Switzerland

Wiss Platte is a 2,630 m summit on the Austrian-Swiss border in the Rätikon, part of the Sulzfluh group. Its north and east faces are flat, platy walls marked by karren, while the west side drops in steep walls cut by deep gullies that can only be climbed. The peak lies about eight kilometres south of Tschagguns and six kilometres northeast of St. Antönien.

No documented first ascent of Wiss Platte exists from the 19th century; the summit is rarely visited compared with the neighbouring Scheienfluh. Hunters from the northeast are assumed to have reached the top early on, but no records confirm this. The mountain lies exactly on the Austrian-Swiss border between Vorarlberg and Graubünden, in the Sulzfluh group of the Rätikon.

The summit lies on the border itself: Austrian surveys give 2,630 m, Swiss surveys 2,628 m. The name appears in two forms, Weißplatte in German and Wiss Platte in the local Walser dialect of the Swiss side. The mountain belongs to the Sulzfluh group of the Rätikon.

The standard route starts from Tilisuna Hut and climbs steep rocky terrain, taking about 90 minutes to reach the top. Climbers need solid mountain skills and some climbing experience to navigate this approach safely.

The Weißplatte is rarely climbed compared with its neighbour, the Scheienfluh (2,625 m), which is separated from it by a deep notch on the south-east ridge. The connecting traverse between the two peaks is rated UIAA grade II. The summit lies exactly on the Austrian-Swiss border, and Austrian sources give 2,630 m while Swiss sources give 2,628 m.