Here is the story: I live very close to this cache (Life of Riley) and decided to stop by to drop it off. I marked down that I dropped the TB and left. I have found this cache before and been there several other times, so I walked straight to the beacon. However, upon arriving I did not see the cache anywhere and concluded this one has been muggled. Because the cache wasn't there, I still have the travel bug, so I will be moving it to another nearby cache. I'm so sorry that this happened and will be moving it to another cache nearby ASAP. I didn't at all suspect that it would have gone missing because it is in a secluded forest, but I really should have waited until after I dropped it off to log it.