That flash of light in the sky during a thunderstorm is caused by an electrical discharge (about 100 million volts – take that you mere mortals!) which has built up in a cumulonimbus cloud. No wonder the lightning bolt is an important symbol in the mythologies of many cultures. It typically represents instant and divine intervention, and is seen as both creator and destroyer, fire and water, salvation and divinity, and supernatural power. This humble lightning bolt has seen better days, but I like it just the way it is: as if roughly coloured in using a stencil and a black texta with not quite enough ink. And it’s in good company with that rust and peeling paint.