Heads in the Clouds

A beautiful day today, with some glorious cloud formations across the river - such as these cumulus congestus - they're threatening to turn into cumulo nimbus and produce some thunderheads, but not managing yet (guess who's just had a look at the Cloudspotters Guide?!)

Two things about this photo which I didn't see when I took it. One is the fact that it looks like two men's heads, complete with eyes and an ear, lying down looking up into the blue. Second, and very irritatingly, is that yet again I've forgotten to clean my lens, and so the photo is ruined by speckles. Grrr!