Piz Dolf or Trinserhorn is a mountain

Mountain

Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...

 in the Glarus Alps

Glarus Alps

The Glarus Alps are a mountain range in central Switzerland. They extend from the Oberalp Pass to the Klausen Pass, and are bordered by the Urner Alps to the west, the Lepontine Alps to the south and the Appenzell Alps to the northeast...

, located on the border between the cantons of St. Gallen

Canton of St. Gallen

The Canton of St. Gallen is a canton of Switzerland. St. Gallen is located in the north east of Switzerland. It covers an area of 2,026 km², and has a population of . , the population included 97,461 foreigners, or about 20.9% of the total population. The capital is St. Gallen. Spelling...

 and Graubünden

Graubünden

Graubünden or Grisons is the largest and easternmost canton of Switzerland. The canton shares borders with the cantons of Ticino, Uri, Glarus and St. Gallen and international borders with Italy, Austria and Liechtenstein...

.

Piz Sardona is lying to the north across a Glacier, and to its west Piz Segnas. Both Piz Segnas and Piz Dolf show the line of the Glarus thrust

Glarus thrust

The Glarus thrust is a major thrust fault in the Alps of eastern Switzerland. Along the thrust the Helvetic nappes were thrusted more than 100 km to the north over the external Aarmassif and Infrahelvetic complex...

in its upper part. The easiest access to the area is an aerial cableway to Fil de Cassons

Fil de Cassons

Fil de Cassons is a mountain in the Glarus Alps, located near Flims in the canton of Graubünden, Switzerland.The southern face is referred to as "Flimserstein" , dominating the appearance of the town of Flims...

 from Flims

Flims

Flims is a municipality in the district of Imboden in the Swiss canton of Graubünden. The town of Flims is dominated by the Flimserstein which you can see from almost anywhere in the area....

or any of various hikes to this ridge lying southeast of Piz Dolf. One route uses the ascent via Val Bargis, the path can actually be seen on the picture crossing the southern face of Piz Dolf in vegetation..