Mountain Lagoon, NSW
5.6 km (4 hrs )
★★★★☆

The T3 Track is a challenging descent from the Mountain Lagoon area in the Blue Mountains to the Colo River. The track follows a narrow ridgeline, before zig zagging down the side of a cliff to exit onto the sandy river bank. Overgrown, poorly marked and very steep in places as it descends some 500 m, this track took me over 4 hours to complete - an average speed of only 1.5 km/h! The reward was some magnificent views of the Wollemi National Park and a bucket list item that I could tick off.

There are no facilities on this walk, so come prepared. You will also require good navigational skills, as even with a GPS, I still lost the track in one section of the descent.