I heard about this TB months before GW5 and contacted the current holder of it and asked if I could see it. It was difficult to see the glow in the bright sunlight and I didn't have a compass, so I only had part of the info I needed. I planned to try it later, but then promptly forgot about it.
Now, months later, while searching for a local puzzle cache, I run across something that jogged my memory of this TB. I found my notes from GW5 (surprising) and took a 'guess' at the missing piece and was successful!
This is was a great TB, and a tribute to the fun puzzles of the cacher who made it.
Thanx!