If you do a route which tops out in this area, the quickest descent is the rap chains above 'Curtain Call' (30m abseil - one 50m rope will suffice but be ready for an easy downclimb and don't go off the ends of the rope!). If you are trying to access this abseil anchor from above, take EXTREME CARE. It is a very exposed 20m downclimb (grade 2?), and any fall would almost certainly end on the ground 40m below. Consider roping up for this downclimb, or even hiking back along the top towards Horne's Point for a safer descent. This abseil descent should probably be more safely equipped, if the ethics police can be convinced.
The Blue Mountains are a World Heritage listed area. The Grose Valley, the cliffs around Katoomba and much of the Narrow Neck peninsula are part of the Blue Mountains National Park which is managed by the NPWS. The Western Escarpment - where most of the climbing is - is Crown Land managed by the BMCC. While the NPWS Plan of Management nominates several locations in the National Park where rock climbing is deemed appropriate, the majority of the climbing remains unacknowledged. To maintain access our best approach is to 'Respect Native Habitat, Tread Softly and Leave No Trace'.
Mixed-climbing on gear and bolts has generally been the rule in the Blueies. Please try to use available natural gear where possible, and do not bolt cracks or potential trad climbs.
Because of the softness of Blue Mountains sandstone, bolting should only be done by those with a solid knowledge of glue-in equipping. A recent fatality serves as a reminder that this is not an area to experiment with bolting.
If you do need to top rope, please do it through your own gear as the wear on the anchors is both difficult and expensive to maintain.
It would be appreciated if brushing of holds becomes part of your climbing routine - do it with a soft bristled brush and never a steel brush!
The removal of vegetation - both from the cliff bases and the climbs - is not seen as beneficial to aesthetics of the environment nor to our access to it. Generally it's best to leave all this sort of stuff to the local climbers.