Grit

I suspect this is absolutely chock full of salt and grit with the mildest winter I've ever know seemingly on the way out (well you never know - we had snow last year about this time).

Chimneys http://365project.org/boxplayer/365-2/2014-03-18

18 March 2014
Pimlico SW1

[Saxa van Eijnsbergen]

Ha, I've also got this one!