Fits the theme nicely. I like the colour palette you've gone for and DoF has been used well to isolate the subject and deal with background clutter. The oof brake cable (?) is a little distracting but not much to be done about that as far as I can see. For the "fill the frame" technique, I'd prefer to be in closer. The subject (for me) is the gear wheel which only takes up half the frame. It's all subjective though!
All your rock images are worthy of the theme, I don't think you would lose too much cropping the wide quarry shot from the right to remove the tree which I might have considered. The moon is very detailed, I have tried a similar image but it was considerably softer (used a 100-300 lens on micro four thirds camera (2x crop factor))
Rock/stone. The quarry shot for me just for the wow factor from the scale of the site.
Tall - love the trippy tree shot.. really gives the sense of height. An abstract but identifiable as to the subject.
Really nice. Can't beat a bit of good camera movement photography - especially anything that reminds me of being a kid again . It has worked really well IMO and I also really like the colour in it. Is it a toned B&W, or natural "as it was on the day" coloured?
My thought is that the cat picture doesn't stand without the explanation; my personal feeling is that including yourself makes it look like a mistake, sorry. The two flower shots, especially the crocuses are much better. The crocus picture is lit in such a way that I can imagine the Teletubbies walking through in the background.