One day we were sawing up old half eaten fence posts that we had dug up. They were posted oddly under a tree. We put one on the saw horse and it seemed to have a loose heart sort of. It moved away but that is common with termite stricken wood or wood that is eaten by ants. We sawed it and were we lucky! The inside that moved was this little bottle! Who put it there and why? We will never know. Someone must have set it on the post and with the years it rotten down to the bottom. Or maybe put it there not knowing the post was hollow and it fell to the bottom and could not be retrieved. Oh well. Could have sawn right into it with the chainsaw. Scary!