Semmering Heilklimatischer Höhenkurort Stempel Briefmarke Österreich 1952 photo about 2 years 0 Semmering viaducts photo almost 3 years 0 Mountains lower austria clouds photo over 3 years 0 Clouds form landscape forest photo over 3 years 0 Clouds form landscape forest photo over 3 years 0 Mountains nature landscape photo over 3 years 0 Clouds form landscape forest photo over 3 years 0