I was also wondering if the rock, image 3 was natural or not.... Mars is certainly interesting!!!
Image 2 is odd, yes....
Image one... I thought it was the right link.... I'll check later on that if its okay...hmmm. it IS from sol 130 but it may have been another image on that sol.... Also I usually adjust contrast/brightness before finding many anomalies so if you increase the contrast, esp the midtone contrast perhaps it's there?
Here are 3 more Mars anomalies... Image 1 shows rather grainy, some round appearing object in the sky, and I am questioning if it is casting a shadow on the ground?
Image 2 shows a lighter square object in the background. Very geometric.
Image 3 shows a Mars rock with very angular objects coming out of openings in the rock....