Square Rock Walking Track (10.5km)

The Square Rock Walking Track offers a rewarding 10.5-kilometre (grade 3) journey through Namadgi National Park, typically completed in around 4 hours. This sheltered trail features a gentle incline, winding its way through woodlands of ash and eucalypts before culminating at a prominent granite outcrop known as Square Rock.

A metal ladder provides safe access to a large rock ledge, where you'll be greeted with stunning panoramic views across the Brindabella Ranges. For an even more comprehensive vista, consider a short detour to the Orroral Valley Lookout. This vantage point showcases the valley floor, once farmed by European settlers and later home to a space tracking station in the late 20th century. If you choose to bypass the lookout, the main track shortens to an 8.5-kilometre return journey.

The walk commences at the Corin Hub on Corin Road, near the Smokers Gap entrance to Namadgi National Park. The initial section parallels Corin Road, gradually ascending to Smokers Flat – a perfect spot to rest and take in the surrounds. Continuing along the less-steep track, you'll encounter the turnoff for the Orroral Valley Lookout. The brief detour is well worth the effort, offering a glimpse into the valley's history.

Less than a kilometre further along the main track lies Square Rock itself. Be aware of stone steps and cliffs along the way, with a metal ladder providing access to the summit. For a longer adventure, consider incorporating the Smokers Trail on your return journey.

Geologically speaking, the landscape is dominated by granite boulders and rock outcrops. These formations originated deep underground around 400-450 million years ago, pushing upwards through existing sedimentary rocks. Over millions of years, erosion weathered away the surrounding sandstones and shales, ultimately revealing the granite. The characteristic rounded shapes of the boulders are a result of both physical and chemical weathering processes. Expansion and contraction within the boulders cause "onion-skin" weathering, where outer layers separate from the main body of the rock in thin flakes. Natural shelters are often formed as the bases of these boulders erode.

The Ngunnawal people hold a deep connection to this land, and their presence is woven into the history of the entire region.

A unique feature along the midway point of the track is Smokers Flat. This flat, grassy area with heathy bog edges is treeless due to cold air drainage from surrounding higher elevations, which inhibits tree growth. Black Sallee eucalypts with their olive-green trunks can be found around the perimeter, while the adjacent slopes support Mountain Gum, Candlebark, and Snow Gum varieties. Look out for rare finds like the Austral Pillwort, a primitive water plant, and the threatened Austral Toadflax herb.

Finally, upon reaching Square Rock Lookout, take a moment to appreciate the panoramic view. Remember to exercise caution near the steep cliffs. Return to the trailhead via the same route.