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A walking route connecting Primrose Hill with Parliament Hill. The route that was presented to the public in 2000 connects two large gardens in London: Regents Park and Hampstead Heath.
On the sign is a leaf of a Plane tree, a tree that is very common along the route. The sign itself is designed similar to the coal holes that were in the 19th and early 20th century in London Click for the item in The ultimate manhole covers site