the rock you see on the photo is just a rock and it could be created by aliens but there is not signs that eny one or enything as been there and there are many othere thanks that are just like it on earth like crop scurcles. You dont complain about that and evan on some rocks in the descert are like that there is even a rock that looks like a thumb but only with the right angle or shade. Its just like that it may look like something that you know but yet it has to have all these diffrent things happen to it befor it looks like that. Like a shadow or the right angle and if NASA did find something that they really did thank it was made from aliens they wouldnt just freely relesse it to the public like that they would put millions of dollors in reserch in to find how it was built.