Beach warnings

When you are at the coast, please take care near the cliffs and caves. They are spectacular but they are also unstable. The cliffs and caves are constantly eroded by the rain, wind and waves and could collapse without warning.
The list of DOs and DON’Ts below will help you to stay safe.


  • take notice of the warning signs
  • keep to the formal paths and beach access points
  • keep behind fences and trail markers
  • stay well clear of the edge of cliffs
  • stay well clear of the base of cliffs.


  • shelter in caves
  • climb over fences
  • climb up or down the cliffs
  • jump from the cliffs into the water.

Special care should be taken near Witton Bluff at Port Noarlunga, the Onkaparinga Estuary at Port Noarlunga South, the cliffs for the full length of Maslin Beach South and at Gull Rock (Perkana Point) at Port Willunga.

This information has been provided in response to a geotechnical study into the coastal cliffs in the City of Onkaparinga. The study found that the causes of cliff instability are natural and ongoing but that people should stay clear of the top and base of cliffs.