Actually a shot of my crawlspace, though even that's an optimistic term for getting around down there! Set up worklight and had it aimed at far wall, snapped off a few shots, called it a day.
pp: crop, desat, curves, resize, usm, sharpen edges, save for web
Statistics
Place: 85 out of 93 Avg (all users): 4.7164 Avg (commenters): 5.6667 Avg (participants): 4.6000 Avg (non-participants): 4.7576 Views since voting: 754 Views during voting: 255 Votes: 134 Comments: 4 Favorites: 0
Of all the photos I have critiqued or commented on, I find my opinion of your photo to be far different than your score and different that others have commented on. In short, I really like this one and I think it fits the challenge description right on.
Composition The challenge is tunnels and caves. The composition of this makes me feel cramped, trapped, looking for a way out. In other words, your photo has what I have in mind for caves. Certainly, your composition is different than all the others, but that is why I like it. First, the negative dark space and limited light provides the atmosphere I mentioned. The light, pipe, and rock, suggest a crawlspace, a personal cave, as you suggest. The photo is slightly tilted, which provides an added feel that you're trapped, pushing to get out. Very well done.
Technical Exposure, focus, DOF, is right on. This is strictly a compositional photo. The technical aspects are minor and are secondary to the strong composition.
I'm sorry to see this scored so low. I think it is underrated. I'd be interested in seeing a discussion on this.
I have a light just like that, but I really wish it wasn't in the image; this looks like a unique place but somehow this isn't calling my name, no focal point, no story to be seen.