dyke that runs from Mount Trefle to Bottle and Glass Point resulting in the unusually formed rock formations still visible. The native vegetation consists of tall heath along the western foreshore containing Allocasuarina portuensis, Smooth-barked Apple and Port Jackson Figs associated with the various exposed sandstone outcrops. In the northern and eastern slopes of the hill formations exist also Tick Bush, Tea Tree, She-oak, bushy Needlewood, Banksia and pockets of Smooth-barked Apple trees. In the lower slopes and flat areas there are stands of Sydney Peppermint, Red Bloodwood and some Port Jackson Figs. Low-level vegetation also contains Sweet Pittosporum, Cheese Tree, Blueberry Ash and a ground cover of Kangaroo Vine. Introduced Plantings and Modifications to Land Form. Apart from the introduced lower grassed areas, other newer introduced tree plantings include Tuckeroos, Brush Box and Moreton Bay Figs. Plantings include those along Notting Parade and around the W. A. Notting Memorial, the Hill Fig Avenue, tree plantings adjacent to the cottage and the Brush Box Tree boundary planting along Greycliffe Avenue and Vaucluse Road. The introduced plantings originally related to the original layout of Greycliffe House and then later to the establishment of the Trust and public recreation. These two uses can be understood from the landscape plantings. In its earlier known state the Park was bisected by a small watercourse known as Shark Creek which flowed into a lagoon behind Shark Beach that drained into the harbour at the north end of the beach. This system has now been replaced by a series of large diameter pre-cast concrete pipes with grassed areas extending over the former creek. It is likely that the land around this creek would have been heavily timbered with dense undergrowth which would have thinned out at the higher elevations. The landscape modifications can be summarised as: cut and filled platform for Greycliffe. cut and filled roadway entry drive to Greycliffe. excavation and landfill for Steel Point Battery group. modifications to beachfront for concrete promenade. infilling the creek and presumably changing the levels around it to create the current lawn area. levelling for car parking in various areas around the park. the Mt Trefle Quarry. cut and fill for the Notting Memorial. filling the swamp behind the beach (site of dressing pavilion). minor changes for paths and minor works around the site. The Park has been separated into landscape management zones (see Appendix 3, Conservation Management Plan,