Standing behind a roaring waterfall is about the most exhilarating experience I've ever had.

You become overwhelmed by the force of nature and you feel very small indeed.

Mark from Melbourne. Not exactly the camera you would use at Wimbledon.

Interesting guy, he develops the plates himself. I never got around to

getting his contact details, would love to see how his shots turned out.

When lava solidifies, the different metallic ores crystallise into different colours.

I never knew that.