The Zillertal Alps are shared by Austria and Italy and borders in the north to the Tuxer Alps, in the north-east to the Kitzbühel Alps, in the east to the Venediger Group, in the south-east, south and south-west to Italian mountain ranges and in the west to the Stubai Alps.
Major peaks of the Range are: Hochfeiler (3'510 m), Grosser Möseler (3'478 m), Olperer (3'476 m), Hochfernerspitze (3'463 m), Schrammacher (3'411 m), Grosser Löffler (3'376 m), Hoher Weisszint (3'371 m), Schwarzenstein (3’368 m), Reichenspitze (3'303 m), Hoher Riffler (3'231 m) und Wilde Kreispitze (3'134 m).
Austria 1972, Schlegeis reservoir at 1'782 m.
The arch dam was finished 1972 (height 131 m),
The Mount Hochfeiler is the highest mountain of the Zillertaler Alps. Its highest point is on the stamp not visible, it is behind Mt. Hochsteller.
First Ascent of Hochfeiler: 24. Juli 1865, Paul Grohmann, Georg Samer and Peter Fuchs.
Austria 1972, Mayrhofen.
Austria 1975, View from Mayrhofen in the Ziller valley toward south-west.
The massif of the Grinbergspitzen is situated in the sout-west of Mayrhofen. The mountain has several peaks. The highest is Hintere Grinbergspitze at 2'884 m, other peaks are Mittlere Grinbergspitze (2'867 m), Vordere Grinbergspitze (2'765 m), Spitzegg (2'674 m) and Lachtalspitzl (2'259 m).
First ascent of its three highest summits: 1877, F. Löwl and David Frankhauser (Austrian).