Another along this old tube line.
Bouncy GPS so photo spoiler should help.
About SideTracked Caches
This cache belongs to the SideTracked series. It is not designed to take you to a magical place with a breath taking view. Probably wiffy at times also. It's a distraction for the weary traveller, but anyone else can go and find it too. More Information can be found on the SideTracked Series website at www.sidetrackedseries.info