Extreme measures will be taken to stop social media users risking their lives to grab a snap on top of a rock perched precariously above the ocean.
The iconic Wedding Cake Rock on the edge of the Royal National Park south of Sydney, is a hotspot for adventurous tourists.
There is currently a 1.6 metre fence at the site, along with warning signs and the threat of a $3,300 fine but tourists have not been deterred.
But now a bigger fence will be built to stop people posing on its ledge.
The National Parks and Wildlife Service spokeswoman told Fairfax the new design, which is to be built next year, will be the same height as the current one, but will be more difficult to climb.
'We are looking at a variety of fencing designs and materials, at an additional cost to taxpayers, in an effort to deter those who are disobeying warning signs and climbing over the fence,' a spokeswoman said.
Wedding Cake Rock is unstable and will collapse within the next 10 years, according to a geotechnical survey.
That has not stopped the flurry of people clambering the fence to pose for an Instagram picture.
'We are calling on people to think about the consequences of their actions, the impact an accident would have on themselves, their family and friends and the emergency services people who put their lives at risk to undertake dangerous cliff rescues and retrievals,' she said.