Found it as the light was fading fast. I was sitting on the ground signing the log when I noticed a cat walking past, coming from behind me about 10 feet to my left. I looked up from the log and saw that it was no ordinary cat: it was a polecat! I immediately abandoned the cache and pulled my camera out of my backpack. That activity caused the polecat (skunk) to take notice of me, and we had a face-off. See attached photo.