Jen Pedler's photos with the keyword: unguessed

Some sort of gull it might be meant to be?

Originally posted to gwl and although no-one guessed *where* it generated an interesting conversation about *what*. Turns out it's a gas vent and Satguru has an entire webpage devoted to the things (see link in comments below). It's situated at the junction of Chetwynd Rd and Highgate Rd, NW5.