This picnic area in the Lane Cove National Park gets its name from the Bible’s Fifth Commandment, which was carved onto a rock by Thomas Tunbridge in the 1800s after an argument with his parents (when the area was a family farm).
Partly hidden by shrubs, the engraving site hosts both Aboriginal rock art, and European carvings. The only engraving that is considered to be definitely Aboriginal is a crescent, probably a boomerang.
A motif of what appears to be a sunburst is thought to also be Aboriginal – which would make it the only known example of its kind in the Sydney area.
There are also later European carvings, including a bow and arrow, cannon and sword.