meh, nothing. Certainly not anomalous. It's probably just small areas of ground that are above the shadow of the ridge. This is especialy clear when viewed from the larger scale image.
Afterall the moon doesn't have an atmosphere to have particlas suspended in it. There is no air to carry dust/smoke/fog. It seems highly unlikely that any kind of smoke or fog on the moon would behave in the way it does on earth, rather it would sink quite rapidly despite the difference in gravitational force.
I could write out a diagram working out the rate of fall of particles arround the moon based on the moons gravitational pull. Basic Newtonian stuff. But as I have already stated this is unneccesary as there is no air to carry the particles (provide air resistance) so particles will not behave in this way on the moon.
I've heard contradictory thing's regarding the "gas" photo. First of all, it's not "small area's of ground that are above the shadow of the ridge. I've never had one person claim it was not a sort of fog or smoke.
On another note, I have never been hypocritical as I have never stated that UFO sitings were governmental conspiracies. Infact I don't believe in UFO sitings, I am not that gullible to take everything I see on TV or read in a newspaper to be true. I have never seen a UFO in my life.
And I have no problem with my childhood fantasies, they were quite delightfull. I believe a good immagination is very beneficial for the development of a childs creative thinking abilities. I just grew out of the idea that some fantasy is reality. If there were no distinction then all would be reality.
Perhaps the ultimate answere is that all is reality and that there is no distinction? hmm, this is unrelated sorry. Just typing to myself.