U.N.C.L.E.: Finally managed to get to the cache to check it and, sure enough, it's gone. Definitely not in the cavity where I hid it. I had a good look around and added to the hour that Onslow Fisherman (x2) spent searching recently, I'd say it's been muggled. How on Earth do people find these things in such remote locations? Collected the waypoint on the way home and am archiving the cache. Both waypoint and final areas now available for new caches.