The Waterfall Walking Track is is a pleasant enough walk through a variety of forest types at about 1200m of elevation in Kosciuszko National Park near Jindabynbe. As the name suggests there is a waterfall along the way, but I think the highlight is a collection of giant boulders. Not one of the glitzy alpine walks further up Kosciuszko Road but worthwhile for a change of scene.
You can start at Sawpit Creek picnic area, going at first under the road. It’s a straightforward and mostly flat circuit walk: more information on the NPWS website, and you can see the route on Google Maps.