I assume it's some sort of tractor tire...There are quite a few tires back in our woods, all just barely off the property and on the property of a guy who owns a lot but doesn't live it (and yes we got the okay to walk around on his lot). I really don't like that it's in the creek but am not sure if there's anything I can do to change that...besides being enormous and heavy, there are dense brush/trees in every direction :/
Great picture! We've got giant tractor tires lying about... the dogs love them! The cutest thing ever though was when we had three little baby pygmy goats who would jump around on them <3