Rheinwaldhorn, Mountain summit at Grisons-Ticino border, Switzerland

The Rheinwaldhorn, called Adula in Italian and Piz Valragn in Romansh, is a 3402 m summit on the border between Grisons and Ticino, the highest point of Ticino. Its west, north and east flanks are framed by the Vadrecc di Brasciana, the crevassed Läntagletscher and the smaller Paradiesgletscher, while the canton boundary runs over the north and southeast ridges. A summit cross with a book stands on top.

The mountain sits along old paths that have connected the Rhine valley to the north with Ticino to the south for centuries. The passes around it served as crossings for traders and travelers moving between these two very different parts of the Alps.

People on either side of the border use different names for the peak, reflecting the languages and traditions that separate the Alpine communities living in Grisons and Ticino. This linguistic boundary makes the mountain a natural cultural meeting point between Germanic and Italian-speaking regions.

The usual approaches start from Torre or Lago di Luzzone in the Blenio Valley via the SAC Adulahütte at 2012 m or the higher UTOE Adulahütte at 2393 m, from Val Malvaglia via Capanna Quarnei at 2107 m, from Vals via the Länta-Hütte, or from Hinterrhein via the Zapporthütte. The routes from the Länta and Blenio sides cross the Vadrecc di Brasciana and the Läntagletscher and are rated L to WS in the SAC guide. The Zapport approach crosses a Swiss Army firing range where heavy weapons are used.

The summit carries a cross with a book, and on very clear days the horizon reaches the 291 km distant Piz Argentera in the Seealpen, beyond the Po plain. The Vadrecc di Brasciana glacier below lost 244 m of length between 2000 and 2010.