Woonona - Environment

The sequence of sedimentary rocks in this district is Wianamatta Shale, Hawkesbury Sandstone, Chocolate Shale, Narrabeen Sandstone, Upper Coal Measures. The influence of parent rock and topographic shelter is very apparent on the type of vegetation that grows in different areas of the district. (Davis, 1936)

The Escarpment in this area supports good quality stands of Eucalyptus and rainforest. Unfortunately, extensive clearing and bushfire damage behind and north of South Bulli Colliery as far as Woonona Heights has degraded the area. Wet sclerophyll forest is found on parts of the eastern slopes from Rixon's Pass to Bulli Pass Scenic Reserve. (Gordon, 1985)

Pied Currawongs are common birds of the forests of the district. At Woonona, on the edge of the escarpment forests, this species has bred for several years in the same tall eucalypt tree. (Mills & Jakeman, 1995)