The Porcupine Rocks Track is a popular walk to big boulders high up in the Ramshead Range near Perisher Village. There are views over the Thredbo Valley, about 700 to 800m below. If that’s not enough for you then you can walk off-track to nearby Mt Duncan (1926m), and along an impact track and poled route to Mt Wheatley (1877m). All walking is through attractive alpine meadows, heath and snow gums.
There’s information on the Porcupine Rocks Walk on the NPWS website. It’s an easy enough walk suitable for children and inexperienced walkers. Visiting the other peaks is harder. We got our route guide from the Geehi Bushwalking Club book. I’ve included a map below of the approximate routes we took. A bit of route finding was necessary to get to the summit of Mt Duncan, and the last off-track bit to the summit rocks of Mt Wheatley (when you leave the impact track/poled route). You can do a snow shoe circuit in winter via the Mt Wheatley poled route and Kosciuszko Road.