Without doubt some of the objects are just rocks but there also objects where you can put a question mark how it ended up there.
Below I have marked the objects in the original image.
To see the first three objects, I have put the images upside down.
1. Large image upside down shows a head of an animal figure with horns, probably remains of an ancient statue.
2. Large image upside down shows a rock that looks like a sinister head.
3. Large image upside down shows a head and corpse of an animal like a deer/antelope. It looks like the animal died recently.
4. Image shows a small statue of an animal figure.
5. Image shows a face carved into a rock.
Link original image: http://areo.info/mer/opportunity/4059/tn/1P488522550EFFCNJDP2406L5M1_L2L5L5L7L7.jpg.html