This was one of the many "mini falls" in Kalamina Gorge. I've seen these kind of foam swirls only a couple of times in waterfalls, it always makes for an interesting long exposure.
I shot this with a B&W in mind, unlike the lush green waterfalls of NZ, there wasn't much interesting colour to begin with here!
Kalamina Gorge, Karijini National Park, WA, Australia
KarijiniWAaustraliablack and whitekalamina gorgelandscapewaterfall