Discovered at GCBG5XT "16th Annual Wingin' It!" event in Greeley, Colorado. It's a big event and there was a long table full of trackables to discover. They were all taken by the end, although I see thirteen are still sitting in the event inventory. I know some cachers here that strictly use the app and since it doesn't log trackables when a cache log is submitted, they probably have not been logged and will be dropped off in a cache fairly soon. We have a Spring Fling event coming up in March. Safe travels!