Mulgoa Nature Reserve protects an important remnant of the Cumberland Plain vegetation, a native vegetation community that once dominated much of the Sydney Basin, and a variety of native animals including an endangered land snail and a highly diversified bird community.
Mulgoa Nature Reserve also protects the ruins of Regentville, a grand Regencystyle country property dating from the early 1800s. The foundations of the house and the remains of associated farm buildings and other agricultural facilities, such as a dam and terraces, provide evidence of this past use of the area.
The reserve contains shale cliffs up to 30 metres in height that document the region’s geological history and evolution. They are the only known examples of this landform and stratigraphic sequence in the Sydney Basin.