Waiarua and Waipunga Falls
This is actually a stitched shot of 4 photos, with Waiarua waterfall on the left and Waipunga waterfall on the centre-right. Both falls spill over the edge of a giant volanic plateau, produced by an eruption at Taupo centuries earlier. The abrupt edge of the plateau I thought was interesting.
This plateau has a diameter of 100-130km, and still includes active volcanoes and tectonic activity. I got lucky with the light winds and the sheltered position of the falls.