Rip, Rack, Roar and Rumble! If these names mean little to you, then get out and find them in the wilderness. On a four day hike from Kanangra to Katoomba, you will trek through the wildest country imaginable. Not for the unfit, this expedition has you ascending the peaks of four mountains, descending almost 1000 metres in a single day, relaxing by one of the wild rivers of the Blue Mountains, and camping in totally remote locations.