A strange crater.

Yesterday I have received from a friend the mysterious image of this strange Crater.I do not know where he has found it, and the only thing that I know is that the diameter of the crater is of approximately 500 meters.
What I wonder is if and how is possible "geologically" that the nature creates inside the crater those strange squared formations and all angled ones in the same way.
I know various “geologic wonders” like those in Ireland, but I have not never seen nothing of this type in a Crater!
They are bizzarre, but geologically reasonable, formations or we are in front of something artificial? The ruins of an ancient necropolis buried in a crater?

Experts and Geologysts are welcome. Thanks.

It looks like a slump or sink hole rather than a crater to me. Very interesting though.

Actually Imagir, you are Taymour aren't you? You registered 1 week after Taymour was banned, and your producing the same type, or exact image in this case, that you produced under Taymour... Still looking for geologic professional opinions? I gave you two.

Welcome back... I guess

-E-

[edit on 6-11-2009 by MysterE]

I wonder what would happen if you loaded these images into a level editor for crysis as hightmap, would it work ???