 To the north west of the site on a ridge between Pitt Town and Avondale roads is a small area of Castlereagh Scribbly Gum Woodland which is considered as vulnerable.Between Llewellyn Creek, Longneck Lagoon and Avondale road there is Shale /Gravel Transition Forest vegetation containing 2 vulnerable species, "Dilwynia tenuifolia" and "Acacia pubescens".The park also contains Longneck Lagoon, part of the Hawkesbury wetlands which is home a wide variety of birdlife and a number of threatened and endangered species.