Although not a very well-known track, the Porters Pass and Colliers Causeway loop is one of the best Blue Mountains bushwalks. It passes several waterfalls, some great lookouts, secluded grottos and a spectacular slot canyon.
The Centennial Glen Track at Blackheath goes behind the picturesque Centennial Falls, while a side-track takes you down to the base of the waterfall
Lamberts Lookout offers sweeping views from some pagoda-like rock outcrops at the top of the cliffs. It’s accessed via a short side-track off the Porters Pass track.
Slippery Dip Falls cascades down a slot between two cliffs, next to the Colliers Causeway bushwalking track in Blackheath.
A short but scenic bushwalk, the Walls Ledge Loop offers views of the Kanimbla Valley. Combine with Colliers Causeway and Porters Pass for a longer and more challenging loop.