I was traveling up the coast of Australia with my son in 2009. We stopped at Airlei Beach between Mackay and Townsville. The beach is known for its colorful sand dunes (seen on the right) which I was going to take a shot of until this huge cloud descended from out of nowhere - thought it was a UFO, or a 747, or maybe the Enterprise ;-). Then it poured, we got soaked and we had to beat a hasty retreat. Shot with my rusty trusty Olympus OM1, which I've had since 1971 - so that's a film camera for those to young to remember. Enjoy.