This cache is at a bus stop where they found the 4000 year old man
The Narrabeen Man was found by contractors digging for electricity cables near the corners of Octavia Street and Ocean Street, Narrabeen. A forensic investigation was undertaken and bone samples were sent to National laboratory to determine the age of the remains. Radiocarbon dating of the bone suggested an age of around 4,000 years for the skeleton. The Narrabeen man was suspected to be 30–40 years old when he died. This is recorded to be Sydney's oldest skeleton and is Australia's third oldest skeletal remains behind.
An archaeological dig at the site revealed that Narrabeen Man was found in a posture unlike a tribal burial Rather than lying on his front with hands by the side or across the chest, the Narrabeen Man was on his side with one arm across his head.[Further investigation of the skeletal remains revealed evidence of spear ends found embedded into his vertebrae and near other parts of the body. This indicated death by spearing and suggested to that Narrabeen Man was perhaps the first physical evidence of ritual murder in Australia.