Standing in a meadow between Cowdray Avenue and the north bank of the River Colne is a large, 19ft 6in across, hexagonal pillbox. Originally it was shuttered with brick, but almost all of this has now fallen off. There is a small loophole on each of the six faces. The entrance is on the SE side and around this is a low L-shaped blast wall. Some of the concrete above the entrance and much of the top of the blast wall has been chiselled off, probably with a pneumatic drill, exposing the re-inforcement rods. This was done just post-war in an abandoned attempt to demolish the pillbox. The walls are 3ft 6in thick.<1>

Three photos of site.<2>

See also <3>.