Walls Ledge, Colliers Causeway, Porters Pass & Centennial Glen

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Route: Centennial Glen Road, Walls Ledge Loop Track, The Grotto, Slippery Dip Falls, Colliers Causeway, Porters Pass, Lambert's Lookout, Cliff Top Track, Fort Rock, Centennial Glen Track, Centennial Glen Car Park 

Date: 07/12/2025
From: Blackheath

Parking: Centennial Glen Car Park
Start Point: Walls Ledge Loop
Finish Point: Centennial Glen
Region: Blue Mountains

Route length: 6.7 km

Time taken: 02:44
Average speed:  3.24 km/h
Ascent: 323m
Descent: 318m

Points of Interest: Walls Ledge, Slippery Dip Falls, Porters Pass, Centennial Glen

West of Blackheath, Centennial Glen forms the serene headwaters of Centennial Glen Creek—a cool, fern‑lined gorge framed by sandstone overhangs, trickling waterfalls, and deep green shade. The name “Centennial” honours New South Wales’ centenary (1788–1888).

Dogs are permitted on‑lead throughout this part of Blackheath, including the Centennial Glen, Walls Ledge, and Porters Pass tracks, so our four‑legged companion was able to join us for the circuit. The route includes narrow cliff‑line sections, stairs, and uneven ground, so keeping dogs close is essential.

Most visitors reach the glen from the Bundarra Street / Centennial Glen carpark, where a small parking area and toilet block mark the start of several well‑used walking tracks that fan out along the cliff‑line and into the valley. Instead of descending directly into the glen, we began with a more scenic, circuitous approach, following the Walls Ledge Track as it contours the escarpment toward Porters Pass—a classic Blue Mountains route known for its airy traverses and lush forested gullies.

The beginning of the Walls Ledge Loop Track

Let's go

There's a short, steep descent to get you below the cliffs

Kanimbla Valley

Starting from an elevated position, the path immediately offers fine views across the Kanimbla Valley toward Mount Victoria. The track heads south briefly before doubling back to meet the beginning of the Walls Ledge Track.

Walls Ledge follows a narrow ledge halfway down the cliffs of the Shipley Plateau. In places, protective rails guard the edge, as a misstep could mean a tumble into the valley below. The sun-soaked cliffs attract rock climbers year-round, and several groups were out today.

Walls Ledge

The cliffs that are so popular with climbers

Towards the end of the Walls Ledge section, the track opens to a rainforest section and a large basin, leading into Centennial Glen. A steep set of metal steps descends into the canyon, meeting a signed path at the bottom. A short detour brings you to The Grotto, a dark slot canyon with a waterfall the far end. Reaching the falls requires a tricky shuffle along a rock shelf, but the only consequence of a slip is a soaking rather than serious injury.

Short sections are fenced

Kanimbla Valley

Walls Ledge

Centennial Glen

Heading down to Centennial GLen

The steps down to the creek are steep in places

The Grotto

The Grotto

Continuing along the main path, the walk follows the lower waterfalls of Centennial Glen, including the aptly named Slippery Dip Falls. Stone steps and metal rails get you close to the action as the track descends steeply to the base of the falls.

Slippery Dip Falls

Slippery Dip Falls

Slippery Dip Falls

Slippery Dip Falls

The path has a birds eye view down the waterfall

After crossing the creek, the track joins Colliers Causeway, one of Blackheath’s lesser-known tracks. This short yet spectacular route winds along ledges and terraces, passing occasional overhanging cliffs and waterfalls.

Crossing Centennial Glen Creek

Centennial Glen Creek

Colliers Causeway

Colliers Causeway

Colliers Causeway

Cliffs above Colliers Causeway

Colliers Causeway

Next, we arrived at Porters Pass, one of the oldest tracks in the Blue Mountains, dating back to 1888. Indigenous Australians likely pioneered routes down the western escarpment thousands of years prior. Steps typical of the Blue Mountains provide a steep climb up the gully. At the top, Lambert's Lookout offers sweeping valley views from a rocky outcrop.

Porters Pass Gully

Individual dog bath

On Porters Pass

Porters Pass

Porters Pass

Porters Pass

Lambert's Lookout

The trail climbs gently for a short stretch before dropping down across an open hillside that overlooks the cliffs. Ahead, Fort Rock rises as a solitary sentinel, marking a junction where several paths meet. If you clamber atop it, you'll be rewarded with some sweeping views.

The Cliff Top Track

Cliff Top Track

Lambert's Lookout

Fort Rock

From Fort Rock, we began descending once more into the northern end of Centennial Glen. This lush, shaded canyon is dotted with waterfalls and sandstone overhangs and, like Walls Ledge, attracts rock climbers year-round. If you’re not a climber and are exploring Centennial Glen for hiking, you’ll see the cliffs from the walking tracks — but Wave Wall itself is mainly a destination for people roped up with climbing gear. 

Overlooking Centennial Glen

Centennial Falls

Centennial Falls

Centennial Glen

Centennial Glen

The Wave Wall

Centennial Glen

Following the canyon floor, we made our way back to the Walls Ledge Track—a junction we had passed earlier. This final stretch of the loop includes a short climb that brings you back to the car park above the glen.

The loop has a little bit of everything—quiet gullies, cliff‑top views, waterfalls, and those cool, shaded pockets of Centennial Glen that always feel a little hidden from the world. For a walk that’s genuinely one of the best dog‑friendly options around Blackheath, this circuit is hard to beat.