Footage has appeared on YouTube of a BASE jumper performing a daring night-time leap from the tower of the University of WA's Winthrop Hall.
The footage, believed to be a few weeks old, shows an unidentified jumper open their parachute and sail to the ground, barely missing a low wall and appearing to stumble as they land.
On the video, titled What happens when European BASE jumpers come to Perth, another person can be heard laughing then screaming as the jumper narrowly avoids the wall.
The height of the tower from the parapet is just 41.5m, one of the lowest BASE jumps possible.
Australian BASE Association president Gary Cunningham said it was not a preferred height for BASE jumpers, who regularly jumped from 50m or higher.
"It is hard to see on the video in the dark but it does not look like the most graceful landing," he said. "All BASE jumps are potentially dangerous. To overcome the danger a BASE jumper must have good skill and good equipment that is configured for the particular jump.
"Once you get below 50m you are increasing the risk of having a bad landing and getting injured, but it also depends on the skill of the BASE jumper."
Mr Cunningham said the anonymous jumper would have used a static line which allowed the parachute to open more quickly.
There were no objects in WA that BASE jumpers were allowed to use to maintain or improve their skills so they leapt off "whatever they can find".
A UWA spokesman said the stunt was unauthorised.
More than 150 BASE jumpers are believed to have died in the past 30 years, including a 27-year-old Perth man who jumped from a phone tower in Dandaragan last year. <div class="endnote">