It’s been a long time since I’ve found an object on my surveys that has left me perplexed. Neary two years actually. The cynical side of me thinks its probably I haven’t been curious enough or motivated enough to document it. And to my embarrassment, it’s on my daily walk to the shops.
Anyway, can anyone help with this one? It’s about 3 inches square and embedded in a pavement and doesn’t look like it’s a lid that can be opened to something like a valve or switch. Also it looks like it’s brass which is unusual for street furniture of this kind.