Hinter Fiescherhorn, Alpine summit in Valais, Switzerland

Hinter Fiescherhorn is a 4,025 m summit in the Bernese Alps, entirely in the canton of Valais above Fieschertal, about 700 m southeast of Gross Fiescherhorn and joined to it by the Fieschersattel (3,923 m). It rises only slightly above the firn basin between the Fiescherhörner, with steep flanks dropping east to the Fieschergletscher and the Ewigschneefäld glacier on the west side.

The first ascent was made on 28 July 1885 by G. Lammer and A. Lorria via the north-west ridge. The 4,025 m summit lies entirely in Valais, about 700 m south-east of the Grosses Fiescherhorn, joined to it by the Fieschersattel at 3,923 m. Its name comes from lying hidden behind the Grosses Fiescherhorn when seen from the north.

The name means "rear Fiescherhorn" because, seen from the north, the peak stands behind the Gross Fiescherhorn and is hidden by it. From Grindelwald, the two summits can only be made out together. The mountain lies entirely in Valais, in the municipality of Fieschertal, unlike its two namesakes on the main Alpine ridge.

The Konkordia Hut at 2,850 meters provides lodging and serves as a base for summit attempts on this route. Visitors should prepare for high alpine conditions and only ascend with experienced guides or as trained climbers.

The north face holds solid ice formations year-round due to its specific geographical position, with some never melting even at the height of summer. This makes the area a rare place where visitors can observe permanent ice masses within the Alps.