10/20/2019 Update - the research project is complete, the DNA tubes are not good for caches due to the logs getting stuck. We removed the one, now there is only the one container to sign here. Thanks for helping us test!
These caches intend to specifically test an aspect of geocaching. In this case, I ordered some different style bison tubes from Canada and I was intrigued by their design. They have an O-ring like the ones we see around here, but it's integrated inside the cap, keeping it out of the elements. It got me wondering if this will hold up better or worse than the standard style. To this end, at GZ you will find TWO containers. We can't make you do this, but we'd sure appreciate if you'd sign both logs and tell us if either of them is having moisture problems. Thanks! BYOP.