Sarstein, Mountain peak in Salzkammergut, Austria.

Sarstein is an isolated massif of the Dachstein Mountains whose highest summit, the Hoher Sarstein, reaches 1,975 m and forms the border between Upper Austria and Styria. It is built mainly of Dachstein limestone and is a detached block of the Dachstein massif. Besides the Hoher Sarstein it includes the Niederer Sarstein (1,877 m), Schwarzkogel (1,800 m), Gröbkogel (1,724 m) and Feuerkogel (1,704 m).

The Sarstein is a detached block of the Dachstein massif, built mainly of Dachstein limestone, and its ridge forms the border between Upper Austria and Styria. Its name derives from Middle High German "schorre" and Old High German "scorro", meaning jagged rock; in the local dialect it is called Sochstoan. The Sarsteinhütte of the Naturfreunde stands at 1620 m on the southern ridge, while the private Sarsteinalm lies at 1711 m on the north side.

Local residents maintain traditional Alpine hiking routes across Sarstein, connecting communities from Lake Hallstatt to Bad Aussee.

The route is long and tiring, with marked paths and some secured sections on steeper stretches. Good hiking boots and plenty of water are essential since there is little shade and weather can change quickly in the mountains.

On clear days the summit offers far-reaching views across the surrounding landscape, looking out toward the Dachstein massif and Lake Hallstatt. These panoramic views are one of the main reasons why experienced hikers undertake this demanding route.