Researchers discovered a trove of frozen arrows as climate change melts away an ice patch in Jotunheimen Mountains in Norway. These artifacts have been preserved in ice that has melted and refrozen over the years, with the oldest dating back 6,000 years.
Treasure Trove in a Single Patch
The research team from the Universities of Cambridge, Oslo, and Bergen found 68 arrow shafts at the Langfonne ice patch in the Norwegian mountain. Some of these still have arrowheads attached, as the ice preserved the twine and tar that hold the arrow together.
Aside from the large collection of ancient arrows, the discovery also included a 3,300-year-old shoe from the Bronze Age, scaring sticks used in deer hunting from the Iron Age, and remains of reindeer antlers. They also found fabric that may have been used to package meat.
As published in the Holocene journal, the researchers have been secretly working on the Norwegian mountain slope for years to prevent others from contaminating the site. They were able to find various artifacts spanning more than 5,000 years. The most recent artifacts are from around 1,300 AD.
Researchers found 68 arrowheads in Langfonne, one of which is from around 700 AD.
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Frozen Pieces of History
The discovery confirms the interesting hunting practices of ancient people. It also describes the extent of ice at different times.
The arrowheads were made of bone, slate, quartz, iron, or mussel shell. The oldest of them dates back to 4,000 BC. These were found to be in poor condition, probably due to ice movement. Data from ground-penetrating radar (GPR) showed that ice deformation deep in the patch might have broken the brittle arrows.
Meanwhile, late Neolithic arrows, or those from 2,400-1,750 BC, were better preserved than arrows from the next 2,000 years.
In 2006, a well-preserved shoe was found by glacier archeologist Reidar Marstein. Radiocarbon dating revealed it to be 3,300 years old or from the Early Bronze Age. This launched an extensive study on the Langfonne area.
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Window to Novel Archeological Discoveries
The Jotunheimen Mountains are located north of the Norwegian capital, Oslo. Over the past two decades, the ice melts in the regions have been drastically affected by global warming, with the Langfonne ice patch retreating by more than 70%.
Ice patches give way to high-level archeological findings. The Langfonne setting provides opportunities for researchers to engage in important glaciological investigations.
Researchers previously believed that items would be preserved chronologically and can be used to create a timeline. However, displacement in ice movement, meltwater, and other natural processes are believed to have affected the spatial patterning of artifacts in the site.
The spatial distribution of artifacts can measure increased hunting activities in the area during a certain period. Radiocarbon dating also revealed interesting usage patterns.
There are periods when many reindeer bones but few arrows were found, suggesting that the presence of human hunters was low and reindeer were most likely preyed on by wolverines.
Interestingly, artifacts from 600 to 1,300 AD showed an opposite pattern where there is an abundance of arrow finds but hardly any reindeer materials. This has been attributed to activities in the era when Vikings were raiding coastal communities in Northern Europe. Human hunters probably sold the reindeer fur and antlers from their harvest to other communities.
The discoveries also support recent ideas that long-distance trade in Northern Europe started earlier than previously believed.
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