When I was scouting out locations for my #50 hide in this park, I noticed a lot of places where #50 wouldn't fit but a smaller container might. So when I came back today to actually place the container, I brought along a smaller container as well. I would say this is a "small" small or a "large" micro - larger than a bison tube, it's a clear plastic container about 1 1/2" in diameter and 1" tall.
It's tucked nicely into one of those little places off the trail, and a bit of nearby camo covers it up. Please remember to replace the camo when you are done signing the log, thanks. No room for a writing instrument so be sure to bring your own.
So what to call it? Try as I might, I just couldn't come up with a special name so I decided to call it simply "51." Enjoy the search. Do keep in mind that these trails can get sloppy at times, be prepared.