The Sunday Challenge = BEHIND. Take a photograph from behind the subject you are photographing. Don't want shots of people's rear ends, bottoms for bums either ... lol.
*** It could be a shot of a couple of friends taken walking away from you. It could be a crowd in front of you.
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I needed the photographer to convince you my shot was in the opposite direction, from behind.
The image was taken during a congress at the isle of Terschelling, while having a short break. At the beach we made a group portrait. Above you see the rougher shore of the island and the Northsea.