Piz Segnas, Mountain summit in Glarus Alps, Switzerland

Piz Segnas is a mountain summit in the Glarus Alps that rises 3098 meters and sits at the intersection of three distinct ridges within the Sardona massif. The peak consists of layers of grey rock formations and forms a connected alpine ridge landscape with neighboring summits.

The mountain lies on the border between the cantons of Glarus and Grisons, in the municipalities of Glarus Süd and Flims. The aerial cableway from Flims to Fil de Cassons, a common access point, has not operated since 2015. On 4 August 2018, a Junkers Ju 52 on a sightseeing flight crashed into the western flank, killing all 20 people aboard.

The peak lies on the border between the cantons of Glarus and Grisons, above the Pass dil Segnas that links the villages of Elm and Flims. The pass path is the historic walking connection between the two valleys, and the mountain's name appears in Romansh as Piz Segnas on the Grisons side.

The mountain can be reached through two main routes: one crosses the Sardona Glacier, while the other connects Piz Segnas with Piz Sardona across ridges. Summer is the best season to visit when trails are clear of snow and glacier conditions are more stable.

The Martinsloch, a natural rock opening, lies in the Tschingelhörner to the west of Piz Segnas, not on Piz Segnas itself. The Pass dil Segnas separates the two mountains. The hole is famous for the sun shining through it onto the church of Elm twice a year.