This question has come up before. There is lot's of interest in this, but apparently anyone who cares doesn't have root access to their Android. I don't. I know how to root it, but I don't want to mess with it and then have to restore everything. If you have root access, then maybe you can poke around and let us know what you find, but it won't help most of us anyway since it's probably also traverse and write protected except by an app. Knowing it's there won't help us if we can't get to it.