The northern section of Mt Ku-ring-gai Chase National Park (Mt Ku-ring-gai to Brooklyn) has hundreds of Aboriginal art sites. They are both along Cowan Creek and the Hawkesbury River, and along the ridges which woud have been used used by the Aboriginal people as travel routes. A number of sites are along the Myall Trail, and the Mt Ku-ring-gai Aboriginal Site has some significant Aboriginal engravings.

Two kangaroos on either side of a rock shelter; one with entrails coming out of its stomach
Boomerang on a long rock ledge below the Myall Trail.
A few hand stencils in a long sandstone overhang on Porto Ridge, near Peak Hill.
Five mundoes (of which only two are now visible) on an overgrown rock platform on Porto Ridge near Peak Hill.
Multiple piles of stones on a small rock platform are likely to be an Aboriginal stone arrangement.
A small Aboriginal engraving site along the Peats Crater Trail in the Muogamarra Nature Reserve.
The largest figure at this Muogamarra Aboriginal engraving site is a manta ray; nearby are five men, a woman, a kangaroo rat and a very clearly-carved bird.
A large whale engraving next to the Peats Crater Trail in Muogamarra Nature Reserve. Nearby is a wallaby and two circles (which may represent squid or food for the whale).
First recorded by the 1st Hornsby Scout Group, this Aboriginal engraving site depicts a man and his pregnant wife.
A weathered Aboriginal engraving of two wallabies (or kangaroos) on a sloping rock platform
A small Aboriginal engraving site, with two shields and a small man with bent legs.
Below the Shark Rock Ridge in dense scrub is an Aboriginal engraving of a "protective deity, holding up a fish with the right hand"
An Aboriginal engraving site with an adult and young emu, on a small rock platform just above the Pacific Motorway.
One of several Aboriginal engraving sites along Shark Rock Ridge. It includes a large stingray, multiple fish, emus, kangaroos and kangaroo rats and a man (who may be hunting or fishing).
An Aboriginal engraving site along Shark Rock Ridge, which may represent "a hunting incident in the mythology or a totemic ritual". It has 14 figures, including two "koala bears" which resemble a Daramulan.