Here's a clue:
The shadow of some beach grass across the pic 
Scale is hard to fathom until you 'get it'...
Yes, well done Nebs. I took this photo yesterday and it really is a "crop circle"!! Well it is if you call tussock a crop! Now if that had been found on Mars like the "pyramid" or the "face" it too would no doubt be included as one of the "obviously man(or alien)-made" structures, but NO just like the structures on Mars this was created by just a bit of wind and sand, and in this instance a bent over blade of tussock
Coincidentally I have tried to make a crop circle with two drunk mates, a beach, loads of seaweed, and some string.
It sounded like a good idea at the time 
