Say it like it is
Clarity is everything, in signs as well as in technical writing.
This sign doesn’t pull any punches 😉 I guess you could call it the Manly Council version of “Life, the Universe and Everything”:
Transcription (with adapted capitalisation and punctuation):
Beware. Unstable rock formation. KEEP OUT. If you choose to proceed beyond the fence there is risk of serious injury through collapsing rock including but not limited to serious neck and spinal injuries and even death. By Order, General Manager.
“Serious injury… including but not limited to… death.” Oh dear.
And I particularly like the last bit: “By Order, General Manager”. It adds just the right touch of bathos.