Bone Cave: An Ancient Hub of Prehistoric Hunting and Toolmaking
Bone Cave serves as a remarkable window into the lives of early humans, offering a glimpse into the survival strategies and craftsmanship of prehistoric populations. From the production of specialized stone tools to the hunting of native fauna, the site reveals a complex history of sporadic occupation spanning tens of thousands of years.
Key Facts
- Oldest Evidence: Charcoal and stone artifacts date back approximately 29,000 years.
- Peak Activity: The most intensive human use occurred between 16,000 and 14,000 years ago.
- Primary Prey: Red-necked wallabies were the most common prey, followed by wombats.
- Unique Find: A piece of Darwin glass was discovered, marking the site as the furthest known occupation point from the Darwin Crater (100 km).
- Geological End: The site was eventually abandoned and sealed by a layer of moon milk (a soft, white, creamy precipitate of carbonate minerals).
A Timeline of Human Occupation
Human presence at Bone Cave was not continuous but occurred in sporadic bursts. While the earliest dated materials, including charcoal and stone artifacts, suggest activity as far back as 29,000 years ago, there are significant gaps in the archaeological record between 35,000 and 10,000 years ago.
The most significant period of activity followed the glacial maximum, specifically between 16,000 and 14,000 years ago. During this window, the cave transitioned into a center of intensive human activity.
[ไม่มีภาพประกอบ]The Prehistoric Workshop: Tool Production
During its peak usage, Bone Cave functioned as a sophisticated workshop for stone tool production. Early inhabitants primarily utilized quartzite, chert, and quartz to craft their implements.
Archaeologists have noted a rise in the use of bipolar anvilling—a technique where a stone is placed on a hard base (an anvil) and struck from above to fracture small, water-rounded quartz pebbles. Additionally, the inhabitants produced large flakes of chert and quartzite, which were frequently shaped into steep-edged scrapers for processing materials.
Hunting and Diet
Beyond its role as a workshop, Bone Cave was a strategic hunting site. The remains of various animals indicate a diverse diet, though certain species were targeted more frequently than others. The red-necked wallaby was the most common prey, with wombats following as the second most frequent target.
[ไม่มีภาพประกอบ]The Mystery of the Darwin Glass
One of the most intriguing discoveries at the site is a single piece of Darwin glass, dating to the peak occupation period of 16,000 to 14,000 years ago. Darwin glass is a rare, ancient glass formed by high-impact events.
The presence of this material is scientifically significant because Bone Cave is the furthest known occupation site from the Darwin Crater, the source of the glass. The direct line distance between the crater and the cave is 100 km, suggesting either long-distance travel or ancient trade networks.
| Category | Details |
|---|---|
| Oldest Dated Materials | ~29,000 years ago |
| Peak Occupation Period | 16,000 – 14,000 years ago |
| Primary Tool Materials | Quartzite, Chert, Quartz |
| Primary Prey Species | Red-necked wallaby, Wombat |
| Distance to Darwin Crater | 100 km |
Frequently Asked Questions
When was Bone Cave most heavily used?
The most intensive period of human occupation occurred between 16,000 and 14,000 years ago, following the glacial maximum.
What is bipolar anvilling?
Bipolar anvilling is a stone-working method used to fracture small, water-rounded quartz pebbles by striking them against a hard surface or anvil.
What animals did the inhabitants of Bone Cave hunt?
The most commonly hunted animals were red-necked wallabies and wombats, although a wider variety of other animals were also hunted.
Why is the Darwin glass find significant?
It is significant because Bone Cave is the most distant occupation site from the Darwin Crater (100 km) where this rare glass is typically found.
What eventually happened to the cave?
The cave was eventually abandoned and became covered by a layer of moon milk, a white carbonate mineral precipitate.