This is an original early 1900's stereoview by the Neue Photographische Gesellschaft (NPG) from Berlin, Germany.  
This view shows a mountaineer party on their way to the top of a mountain. This is the Zillertal mountain area in Austria. Caption below right says in German language: "22. Zillerthal. Weg auf die Reichenspitze mit Blick auf die Wilde Gerlos".

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