Summer Haze
Banned
Click on the down-facing arrow at the bottom right of your shot and choose 'view all sizes', then choose the original sized shot and copy the image URL. Flickr and GAF don't get along very well.
Alternately, if you're using Google Chrome, you can use this extension (made by a gaffer) to streamline the process:
https://chrome.google.com/webstore/detail/og-flickr/fichomnnmpafldcbpelajknhhmcafcca