On the north side of the Hawkesbury River, 9km southwest of Gosford, Brisbane Water National Park extends eastwards from the Pacific Hwy to Brisbane Water itself. Despite its name, the park is mostly sandstone outcrops and forest with only a short Brisbane Water frontage. This park is famed for its explosions of spring wildflowers and its Guringai stone engravings, the most impressive gallery of which is the Bulgandry Aboriginal Engraving Site , 3km south of the Pacific Hwy on Woy Woy Rd. The park also has mangroves that are home to swamp wallabies, platypuses and the rare yellow-bellied gliding possum.
