Photo 365 - On Assignment - September (Textures and Patterns)
Ridged
Yes, "ridged" is a word for those of you who will ask. And yes, I meant to use "ridged" and not "rigid" for the rest of you who will ask. So we clearly have four sections. Each section has some ridges in various states of wear. There appears to be some kind of chemical reaction which tarnished each section. I'll give ya a dollar if you can guess this one, good luck!
Shot on Canon Rebel Ti1 at f/13, 13.0 sec, 60 mm, ISO 200