I once had a box that was hidden in a log along a trail [....]

I once hid a box under a log at least 20 feet off of the trail. It was in a place where no one would go if they weren't looking for my box.

I received a report or two that boxers couldn't find my box. I went and looked for my box, and the log was missing. This wasn't a little log, it was a fallen tree at least 18" in diameter. It has just gone missing, and my box too.

I carved another stamp to replace it; same theme but different image. Since it was in a series I let people know that the new stamp was different and they should go look for it. Because of the way that AQ works with series, I renamed the old one, moved it to the end of the list of boxes and named the new one with the previous name (adding the year of replacement behind it).