A tiny pyramid and sphynx, along with other odd objects highlight this area, and distinguish themselves from the nearby geology.
Also shown: a sculpted head remnant, a turtle shell like object, and a very angular block.
The pyramidal form, although tiny, is interesting in that, rather than being a single stone in a pyramidal shape (which is common enough in nature to ignore), this one has an apparent composition of multiple stacked blocks that fit tightly together, and which run roughly horizontal to the ground. It therefore, appears more like a constructed feature, rather than a randomly shaped stone.
Here's another little pyramid shape. This one was discovered by Keith Phillips:
Look carefully, and you will see a little archway on the right face. Could there be something inside of it?
The archway reminds me of this archway on this dome shaped object from sol 124 - again with something just inside:
And look at that strange pyramidal steeple shape on the top of the dome:
This dome-shaped object was discovered by "Humanoid" of Alien Anomalies forum - discussed at this link:
These next images are of rota's discovery on sol 390 of a mound or pyramid.
Compare this to other Mars pyramids at this link.
Image credit: NASA/JPL
Raw Images Courtesy of NASA and ESA. Special thanks to EVERYONE who has contributed in the search for Mars anomalies. Also thanks to Google, Picasa, ImageShack, and Photobucket.