SmithyPeaknuckle: I made it by ground zero today and confirmed what the last cacher found -- the metal rod sans the original container. Without the 2-foot tall replica of the lamp post from the description page, this cache's theme really wouldn't make sense. Additionally, forthcoming park rules would likely have forced this one to be moved anyway so I am regrettably archiving it.
Thanks to all the geocachers who were not afraid to put some miles on their hiking shoes to make it out to this one. I was rather proud of the idea, and hadn't expected muggles to come so far off the beaten path to stumble across this one. Just like it mentions in the book, you'll have to find a new way back to Narnia...