Please credit this photo Tommy Gildseth in the immediate vicinity of the image.
Also note the infobox above for possible further requirements

If you are using the picture outside wikimedia system, it's wanted (but not required) that you let me know by e-mail: gildseth [@] gmail.com, or tell me on my user talk.

You can use the following page to help you in generating a valid photo credit: lizenzhinweisgenerator.de

Failure to comply with this requirement means you can no longer use the image free of charge under the Creative Commons license and your use of the image is unlawful. I obviously do not contribute images to Wikimedia Commons to get rich, but I will pursue instances of use without proper attribution. Currently, the going normal fee for a one time use of an image in Norway in 2019 is Kr2687,-. If the image is used without permission, that fee is doubled. Additionally if the image is used without attribution, the fee is trippled to Kr8061,-. If the image has been used multiple times, you have to pay for each and every use according to the same fee structure.

So, to save yourself needlessly having to pay money for an image you could have used for free and to save me the hassle of having to generate a bill, sending it to the appropriate person, following up on the bill and extra hassle on my end of year tax reports, please ensure you include the correct attribution when using the image.