"The National Parks and Wildlife Service has advised that climbing is not permitted at "Centennial Trev" due to the high impact on the rare and significant sandstone arch (Dargan Arch) and adjacent cliffs (including Creekside).
These areas and access tracks are all within Blue Mountains National Park. They have been developed without consultation and approval from NPWS, and bolts will be removed.
The cooperation of climbers in protecting thgis significant area is appreciated,
For further information contact Blackheath NPWS on 47878877 or neil.stone@environment.nsw.gov.au "
This is the crag affected - http://www.thecrag.com/climbing/australia/blue-mountains/bells-line-of-road/area/283521849