There seems to be symmetry in others as well. Of course there is an inorganic explanation for everything, right? My point is that even the inorganic explanation would be fascinating. How can they just roll on by and not take a closer look at this revealing geology? It has been a long time since they have conjectured as to what the rocks of the Columbia Hills might be. The last conjecture was certainly nothing definite - anywhere from igneous to sedimentary, and everything in between. I do have a 4 year geology degree. Clasts such as these (if that is what they are) are exactly the type of thing that you study to learn more about the rock's origins. They provide compositional, textural, geometric, and distributional differentials that usually reveal much about the diagenetic history. Often clasts are from a previous formation, even a previous epoch. They never fail to tell a story, unlike the cheap flaming criticism of R.L. above.

The near parallel lenticular cores that could be seen in one instance, within very round holes, are striking, but without more good examples, or a better look, it could just be a coincidence of weathering. Almost all of the holes do seem to have a loose core present in them. These do not seem at all like the blueberries. Perhaps they will take a look, after all.