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Sunny 16, Tori and Ryan, SX-70/PX600 UV + black frame, 2011
The photo was taken in Norfolk (GB) in June of this year by their friend Sunny 16. It's a great photo which you can see again on Sunny's website, and in the context of her archives here, and on Flickr, where she's also known as Chaps1.
If you want to know the origin of the term Sunny 16, it's a photographic term used to calculate daylight for exposures without using a conventional light meter, and it's found on Wikipedia.