Several of these lovely iron plaques have recently appeared in South London to mark the flow of the River Effra, the lost London river that now lies beneath the streets between Norwood and Vauxhall. It’s a wonderful project and Diamond Geezer has more details. He notes that the first plaques were laid in July and the project appears to be some way from completion, with several plaques yet to be installed. But there is a flurry of them around Herne Hill along Dulwich Road, where they make a nice counterpoint to the Effra’s other principal markers, the stinkpipe.
For those interested in the Effra, a book by Jon Newman has also just been published about the river. I once followed the course of the Effra in the company of a water diviner, who got us all lost in the middle of an estate during a snow storm while taking us on a route that bore very little resemblance to those diligently mapped by Effra experts. Still, it made for an entertaining afternoon.