There are many tunnels in the area of Greenhithe by the Ingress Abbey what fun fact was abandoned in the 1980s I wasnt able to get inside all the tunnels and other stuff that is in the area but I did manage to get pictures of the outside if any of you guys want to try to get access the tunnels were called The Follies, Georgian Garden Tunnel and many more what I'm nor sure lf there names I have also inclued some pictures of The Grange A archway what I climbed up onto and got some pictures (Sorry about the text as do nor know much of the history) Here are the Pictures: