Why is timing so important with this waterfall, you might ask?

Well, you'll want to time your visit to this falls either during the Wet Season (though roads may be impassable that time) or at the start of the Dry Season. Wait any longer and the falls will dry up. I've seen photographs in the literature taken later in the year where this was the case.

As for timing your visit during the day, since the falls sits in a shaded gorge, photographing the falls isn't easy (as alluded to earlier thanks to the presence of shadows). I reckon you'll have to be here at around midday when the sun is likely to shine right into the gorge. Either that or you wait until the entire falls is in shadow (early morning or late afternoon) and photograph the falls that way.

Look for a signed turnoff for the Joffre Gorge and Knox Gorge off the unsealed Banjima Drive and take it for another 2km to the car park. From there, it's a less than 10-minute walk to the platform looking into the shadowy gorge.