2015
TQ4780 : Borough boundary on the Ridgeway
taken 9 years ago, near to Thamesmead, Greenwich, England
Borough boundary on the Ridgeway
Plumstead-Crossness Ridgeway
Not to be confused with the ancient track also known as the Ridgeway, this is a public path along the top of London's Southern Outfall sewer where it runs inside an embankment for about 5km from Plumstead to the sewage treatment works at Crossness. See Link for the walking route, and Link for the sewer itself.
After several years when it became overgrown and nearly impassable in places, Greenwich council upgraded their section of the Ridgeway in 2015. The Bexley section remains unimproved at the time of writing.