The Strahlkogel, at m (AA), is the highest peak in the Larstiger Mountains (Larstiger Berge), a subgroup of the Stubai Alps in the Austrian state of Tyrol. The Strahlkogel is also the highest mountain in the municipality of Umhausen. Its name comes from its great, white, light-reflecting, quartz layers, which allegedly cause the mountain to radiate (strahlen). It has the shape of a well-proportioned, steep and pointed pyramid. Ascending the Strahlkogel is difficult and it is thus only rarely visited, unlike the neighbouring 3,287-metre-high Breiter Grieskogel. The first ascent of the mountain was in 1833 by Peter Carl Thurwieser, but his route and the precise circumstances of the climb have not been passed on. On 28 August 1887 Ludwig Purtscheller and Fritz Drasch from Salzburg climbed the mountain. Their route led along the west arête. Today, this is the normal route and easiest way to reach the summit.