The Nattai National Park is a protected national park that is located in the Macarthur and Southern Highlands regions of New South Wales, in eastern Australia. 48,984-hectare (121,040-acre) It is situated approximately 150 kilometres (93 mi) southwest of the Sydney central business district and primarily encompasses the valley of the Nattai River, which is surrounded by spectacular sandstone cliffs. The park is covered in dry sclerophyll (hard leafed) forest - mostly eucalypt, and has fairly frequent forest fires.