The Portugese Cannon

On top of Calton Hill sits this large brass cannon, pointing towards the main features of Edinburgh. It was a stroke of luck that the canon is made out of the copper and zinc alloy and that the theme for this weeks blip challenge is BRASS.

The eagle-eyed amongst you will notice there has been two or three bits of jiggery pokery to make this into a nice image. Points (but no prizes) to the first person to spot all three!