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.

An interesting Aboriginal engraving site on Topham Hill depicting a school of 30 fish; below this site is a weathered carving of a man.
Aboriginal rock carving of a male wallaby or kangaroo, on Topham Hill.
Multiple Aboriginal engravings located on five sites across the western side of Topham Hill, on a series of rock ledges.
An Aboriginal engraving site near the Topham Trail, which has two overlapping men.
Axe grinding grooves and water channels along a creek below the Topham Trail.
A small site near the Topham Trail with an indistinct engraving, which may be a boomerang.
An Aboriginal engraving of a circle, carved on a small boulder near the Topham Trail.
A fairly distinct Aboriginal engraving of an emu, near the Topham Trail
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
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.