This is a classic scenario from a horror movie; you're camping in the wild, it's late at night, and you hear mysterious noises outside your tent. Who could it possibly be? You're miles from civilization, and you're all alone. Would you be brave enough to open the tent up and peek outside? The woman who took this picture was, and this was the sight that awaited her!
This is a veritable platoon of raccoons. They're scavengers and have a long history of breaking into tents and stealing any food they can find with their surprisingly nimble hands; they've been known to open bottles and sealed containers when provided with the opportunity. They're generally thought of as solitary animals though, hunting either alone, or in pairs. Obviously, this gang never got the memo! The photographer more than likely had left parts of her evening meal outside the tent, with would have attracted raccoons as surely as moths to a flame.