six-pac: Well, I'm sorry to say that this one is very gone! I feel especially bad because of the coin that was in the cache at the time of it's disappearance.
Apparently, someone used one of the picnic tables in the pavilion to aid in their search, but did not put it back where it belonged. This brought the actual cache to the attention of the grounds keeper who had not been notified that the container was sanctioned. He removed the cache and never even examined it to see what it was. He just chucked the whole thing in the dumpster and now it is most likely permanently hidden in a landfill outside of Lancaster.
You are all still welcome to look for it... at the dump. Again, I apologize...