First of all, don't panic, you do not need go close the cliff edge or put yourself in danger. Do not climb over the FENCE! However, you will need to go near the boundry though. This cache is a nano with a camo tucked away in one of the few spots left at Coyle's Park to hide a cahce. Tweezers or a pen may be needed to get the log out. BYOP.
As with most urban parks, there are a lot of muggles around, especiialy on weekends. Some stealth will be required here as it's relatively close to a kids flying fox.