The Kleiner Rettenstein is a 2,216-metre-high mountain in the Austrian state of Tyrol. It lies in the Kitzbühel Alps, roughly east of its larger brother, the Großer Rettenstein.
Wikipedia https://en.wikipedia.org/wiki/Kleiner_Rettenstein
Address 6365, Austria
Coordinates 47°20'13.316" N 12°20'30.961" E