Taken at a local construction site, this is the tred and part of the wheels of an earth mover. I had trouble finding a combination of the 4 elements and hope one is enough.
I cropped, adjusted levels, boosted the saturation then resized the image.
Statistics
Place: 102 out of 139 Avg (all users): 4.9938 Avg (commenters): 5.0000 Avg (participants): 4.8488 Avg (non-participants): 5.1600 Views since voting: 827 Votes: 161 Comments: 3 Favorites: 0