The Labyrinth, Cradle Mountain - Lake St Clair National Park, Tasmania
Lake Cyane Falls is an unofficially named falls formed by the outlet creek from Lake Cyane in the plateau of lakes known as The Labyrinth, above Pine Valley near the Overland Track. The falls come partially into view on the descent into The Labyrinth, but to get closer a short off track hike is required. At the bottom of the descent, look for the side trail leading to Lake Cyane, then head around the eastern side of the lake to the outlet creek, which almost immediately tumbles over the falls.
The falls are likely seasonal, with the photo on this page taken after a large amount of rain, but if they're flowing it's well worth the short detour to have a look.