This is a simple token based off of the public domain geocaching logo. I needed something to leave behind in the ones I visit.If you take a look at the Wikipedia page on geocaching, http://en.wikipedia.org/wiki/Geocaching, you can see the logo I based this on.It’s intended to be a keychain but the single joint between the outer ring and inner logo may make it too fragile for that. I haven’t carried one around for long enough to tell.