Rose Cottage Cave: A History of Archaeological Excavations
Rose Cottage Cave serves as a critical site for understanding prehistoric human activity, spanning the Middle Stone Age (MSA) and the Later Stone Age (LSA). Over several decades, multiple archaeological campaigns have sought to uncover the cultural sequences and environmental shifts preserved within its strata. From early 20th-century explorations to modern spatial analyses, the site has provided invaluable data on lithic tools, ochre usage, and ancient vegetation.
Key Facts
- Excavation Eras: Major work was conducted by Berry Malan (1940s), Peter Beaumont (1962), and Lyn Wadley (1987–1997).
- Chronology: The site contains materials from the MSA and LSA, including ceramics dating to approximately 1100 BP.
- Ochre Findings: Malan recovered 84 definite and 25 potential pieces of ochre, with the oldest layers showing the highest concentration.
- Industry Types: Identified industries include the Wilton, Pre-Wilton, and a three-phase Howiesons Poort, as well as the Early Later Stone Age (ELSA).
- Environmental Data: Charcoal analysis revealed distinct vegetation patterns for the Holocene and Late Pleistocene epochs.
The Early Explorations of Berry Malan
In the 1940s, Berry Malan initiated the first extensive excavations at Rose Cottage Cave. His methodology involved excavating in 3-inch (76 mm) spits—small, controlled layers of sediment. However, depending on the homogeneity of the sediment, some spits reached depths of 6 to 9 inches (150 to 230 mm). This approach unfortunately distorted the cultural sequence boundaries, making it difficult for later researchers to correlate collections across different excavations.
While Malan explored a large portion of the upper levels, he only dug deep into the MSA layers in five yard-measured squares. His collection of ochre was selective; he kept only pieces he deemed significant, which led to erratic frequencies of lithic chunks and chips in the record. Later studies by Wadley and Harper suggested that the small fragments of ochre lacking use-wear detrition were a result of these irregular collection practices. Notably, an examination of scored ochre from the oldest MSA layers suggests the presence of engravings rather than practical scoring.
Malan ceased his work in 1946 and published preliminary observations in 1952. He categorized the Stone Age sequence into the Wilton, Pre-Wilton, MSA, and a three-phase Howiesons Poort industry.
[ไม่มีภาพประกอบ]
Radiocarbon Dating and Peter Beaumont
In 1962, Peter Beaumont returned to the cave to apply radiocarbon dating—a scientific method for determining the age of organic materials that was unavailable during Malan's time. By collecting charcoal samples, Beaumont was able to confirm the antiquity of the site.
His findings identified ceramics in the upper layers dating to 1100 BP (+/- 30). He also proposed the existence of the Early Later Stone Age (ELSA) industry, which dates between 29,000 BP and 40,000 BP and is found between 1 and 3 meters deep. However, because the cave deposits slope, using depth as the sole metric for comparing layers is considered unreliable. Beaumont's results remained unpublished.
Modern Analysis by Lyn Wadley
Between 1987 and 1997, Lyn Wadley led a comprehensive eleven-year excavation project. To ensure the safety of the site, Wadley began by clearing and sandbagging collapsing cave walls. She implemented a structured 20-quadrant grid and excavated to depths of approximately 0.5 meters (20 inches) in undamaged areas.
Wadley shifted the focus away from the upper MSA layers to prioritize LSA occupation and spatial analysis. Working with Philip Harper, she conducted extensive analyses of lithic assemblages (collections of stone tools). These assemblages contained fine-grained opalines, which researchers believe were washed into the Caledon River—located about 10 kilometers away—from the Drakensberg basalts by mountain streams.
Additionally, Wadley's analysis of charcoal samples provided a glimpse into the ancient environment, identifying two distinct vegetation patterns corresponding to the Holocene and the Late Pleistocene.
[ไม่มีภาพประกอบ]
Summary of Archaeological Campaigns
| Researcher | Period | Primary Focus/Contribution | Key Findings |
|---|---|---|---|
| Berry Malan | 1940s | Initial sequence mapping | MSA/LSA materials; ochre fragments; Howiesons Poort phases |
| Peter Beaumont | 1962 | Radiocarbon dating | ELSA industry (29k–40k BP); ceramics (1100 BP) |
| Lyn Wadley | 1987–1997 | Spatial analysis & environment | LSA occupation; opalines from Drakensberg; vegetation patterns |
Frequently Asked Questions
What was the main issue with Berry Malan's excavation method?
Malan used 3-inch spits that sometimes varied in depth to 9 inches. This inconsistency distorted the boundaries of the cultural sequences, complicating the ability of later archaeologists to correlate the artifacts with specific layers.
What is the ELSA industry found at Rose Cottage Cave?
The Early Later Stone Age (ELSA) industry was identified by Peter Beaumont. It dates back to between 29,000 and 40,000 BP and is generally located in the strata between 1 and 3 meters deep.
What did the ochre analysis reveal about the oldest MSA layers?
The oldest MSA layers contained the highest percentage of ochre. Detailed examination suggests that the scoring found on these pieces may actually be engravings rather than the result of practical tool use.
How did Lyn Wadley determine the ancient environment of the site?
Wadley collected charcoal samples for environmental analysis, which allowed her to identify two unique vegetation patterns: one belonging to the Holocene and another to the Late Pleistocene.
Where did the opalines found in the lithic assemblages originate?
The fine-grained opalines were likely transported from the Drakensberg basalts by mountain streams into the Caledon River, which is situated approximately 10 kilometers from the cave site.