Thanks Avijit Gosh for your interest.I am sure this image is taken in September and you are right,in September and october you have a nice time for taking pitures with blue and clear sky there.
Franz Bauer
Thanks Richard,
this image is taken near of the cablecar station Blauherd.You cannot see the wide distance to the Matterhorn.There is a vally between my viewpoint and the Matterhorn.