Step Pyramid

In the image of Sol 3631 captured by the Curiosity probe, a stepped "pyramid" appeared in the pure style of the pyramid of Djoser located in Egypt.

Although extremely deteriorated, it is perfectly perceptible that there are alternating layers of two types of material or the way in which the material was placed. 

They may say that too much imagination is needed to see it, but here is a comparison with the before and after of the pyramid of the Sun in Teotihuacan, above we can see a photo from the year 1900 and below a current photo of it. Seeing this, the stepped pyramid of Mars is actually much more perceptible than the pyramid of the Sun was in ancient times.