Reißeck, Mountain summit in Carinthia, Austria

The Reißeck, also called Großes Reißeck, is the 2,965 m highest summit of the Reißeck Group in the High Tauern of Carinthia. West and south of the summit block lie the reservoirs of the Reißeck-Kreuzeck hydropower group; below the Großer Mühldorfer See dam stands the Reißeck Hut at 2,287 m. The normal route climbs from the Kalte Herberg col over the south arête, easy but requiring sure-footedness.

The name traces back to Middle High German terms describing mountain streams, reflecting water features that shaped the landscape. Over time, the area became integral to hydroelectric development, transforming it from a remote peak into part of a modern power network.

The name Reißeck comes from an old water name such as Reisach, meaning "torrent", from Middle High German rîs, "the falling one". The Reißeck Hut, built in 1908 and run by the Austrian Alpine Club's Spittal/Drau section, stands at 2,287 m below the Großer Mühldorfer See dam. Herbert Gantschacher's 1998 book documents the music theatre 'Kar' staged at Reißeck as a collaboration between industry and art.

The normal route runs from the Reißeck Hut (2,287 m) or the unmanaged Neue Moos Hut over the Kalte Herberg col and the south arête; it is technically easy but demands sure-footedness. The Reißeckbahn funicular and mountain railway stopped running in 2014/2016, so the ascent must be walked. The Kleines Reißeck (2,924 m) is reached over steep grass.

The Reißeckbahn funicular and the narrow-gauge Reisseck Mountain Railway, built in the 1950s to carry materials for the power plants, later took hikers up from the Möll valley; passenger service ended in 2014/2016. The Reißeck Hut at 2,287 m, built in 1908, stands just below the dam of the Großer Mühldorfer See.