I also had one of yours in the last batch, but didn't get to it before the rollover. Sorry 'bout that. I am starting to feel like your personal "critiquer." :)
Compositionally, I can see the rule of thirds though it is probably a bit subtle for the voters. I also thought it fairly interesting, though did wonder what it was. The texture adds some dynamics to the shot.
Technically, I think the slightly out of focus section on the bottom right is a bit distracting, but the rest is pretty much right on.
Overall, I think once again, you have entered a challenge with a shot that met the challenge, and held a deep story, if people were willing to stop and think for a minute. Though I must confess, a bright red rose or some other "not related" object thrown on there would have given it a splash of color and another element of mystery.
The uneroded veins in the rock roughly correspond to the grid you'd see on your LCD screen if your camera had a "ROT-Assist" function ...
This is one of my recent entries which are lighter than they should be due to my monitor recently going way out of calibration. It looks better darker.
I must admit that my eyes are working hard to see what this is. Is it an aerial view of the earth somewhere? A closeup of some sort of fabric or tarp? Perhaps if there was something else in the photo that would give your viewer a reference as to the subject.