The Garrigal people originally inhabited West Head, which is home to one of the largest known concentrations of recorded Aboriginal sites in Australia. The Basin & Mackerel Trail, America Bay Track and Topham Hill are some areas with significant Aboriginal engraving sites.

A small rock platform near the Topham Trail with a very weathered Aboriginal engraving of a small man.
Two red ochre handprints, in a low shelter below Topham Hill
The Topham Trig Station engraving site is one of great ceremonial significance. It has a Daramulan figure, as well as a man and woman.
Two rows of mundoes near West Head Road which may have represented the tracks of mythological men; much of the site is now covered over.
A small panel of Aboriginal rock art above Towlers Bay, with three motifs in red ochre.
Scattered figures including two fish and a small man at the start of the Towlers Bay Track at West Head
A "fishing scene" near the Wallaroo Track, which includes a woman, fish and boomerang.
An intriguing Aboriginal engraving site near the Wallaroo Track, with five men (in two groups) as well as a number of other figures including boomerangs and mundoes.
Aboriginal engraving site which has a set of axe grinding grooves next to a waterhole, and three engraved figures. (Part of the Arden Trig series.)
An Aboriginal rock enrgraving site below the Waratah Track, described as depicting a successful emu hunt,
An Aboriginal engraving site on a spur beneath the Waratah Track, which may illustrate a fishing scene.
Two potholes with a deep channel around them and two axe grinding grooves along a steep ledge. A short distance away are engravings of a shield and fish (not found).
Aboriginal engraving site which represents a man with fish which are his totem (or which he hopes to catch) near the Waratah Track. (Part of the Arden Trig series.)
Aboriginal engraving of a man and woman near Waratah Track. (Part of Arden Trig series.)
A cerermonial or ritual Aboriginal engraving site below the Waratah Track, with a decorated man and woman, whale and many fish.