Files (images, videos, audios) of the Wikimedia Commons media archive are subject to a free license. This freedom does not mean that copyright does not apply. On the contrary: in return for free use, the re-user must comply with the license conditions. He must name the photographer/author Martin Thurnherr as the creator and provide the source (Wikimedia Commons) - if possible with the link to the original file.
This picture was taken by Martin Thurnherr. If you use one of my pictures, an e-mail (account needed) or a message on my discussion page would be greatly appreciated. Please note the license terms. Other licensing terms can get discussed, too.