Gennerhorn, Mountain summit in Osterhorngruppe, Eastern Alps, Austria.

Gennerhorn is a 1735 m summit in the Osterhorngruppe, on the border between the municipalities of Abtenau and Hintersee. With Gruberhorn and Regenspitz it forms the three-peak group above Hintersee. High plateaus around the summit hold alpine pastures such as the Genneralm and Gruberalm.

The area has long served as a route for visitors exploring Austria's alpine region. The mountain hut at Genneralm was built to provide shelter and rest for mountain travelers moving through the area.

The mountain hut at Genneralm reflects how local communities have traditionally used this area for summer gatherings and rest. The place remains a social hub where hikers meet and share meals in the simple alpine style.

Routes start from the Laemmerbach parking area or use a toll road to reach the mountain hut higher up the slope. Clear trail markings with colored signs guide hikers throughout their ascent to the summit.

Gennerhorn, Gruberhorn and Regenspitz form the "Dreigestirn" of the municipality of Hintersee. A round tour crossing all three summits covers about 1230 metres of ascent and takes roughly six hours. The mountain stands on the boundary between Abtenau and Hintersee, and the high plateaus around it hold the Gruberalm and Genneralm.