Norway Ice Arrows: 48 Ancient Weapons Emerge From Melting Glaciers

What the archaeologists pulled from the ice

The Norway ice arrows recovered this summer are a time capsule 5,000 years in the making. Archaeologists in Norway's Jotunheimen mountains have pulled 48 prehistoric arrows from rapidly melting ice, including a fine slate arrowhead believed to be between 5,000 and 6,000 years old. The discoveries came during a recent three-week expedition in a mountainous region of southern Norway about 200 miles from Oslo, as reported by Smithsonian magazine on October 1. The Norway ice arrows are the latest finds from Secrets of the Ice, the largest glacial archaeology program in the world, which has been excavating the region for two decades as a collaboration between the Innlandet County Council and Oslo's Museum of Cultural History.

The oldest of the Norway ice arrows is an arrowhead made of fine slate, found together with two parts of its wooden shaft. Researchers also recovered a complete arrow estimated at 3,600 years old, built with a wooden shaft and tipped with an arrowhead carved from a freshwater mussel shell. Several other Norway ice arrows carried bone tips, and one was tipped with iron. This summer the team focused its work on ice patches next to the Langfonne, Storfonne and Handklefonne glaciers in the Kvitingskjølen mountain area, according to the researchers' own expedition update.

The scale of the program behind the find is staggering. So far the Secrets of the Ice team has recovered more than 5,000 artifacts from 73 archaeological sites, and the Norway ice arrows join an inventory that reads like a time capsule of mountain life: reindeer-hunting equipment, the remains of packhorses, everyday clothing and tools. Previous seasons turned up a 3,400-year-old leather shoe and the world's oldest intact pair of wooden skis. The ice has even preserved textiles that would normally rot within months, including a complete tunic from 300 C.E. and a complete mitten from 1000 C.E. The reason is simple physics, as researchers explain: ice pauses the process of decay by keeping organic material like wood and textiles at a consistently low temperature without oxygen, slowing the microbial activity that would otherwise destroy them.

A brutal reminder hidden inside an exciting find

The thrill of the discovery carries a heavy undertow. When the Secrets of the Ice archaeologists began excavating back in 2006, they mostly unearthed relatively recent artifacts, most dating back less than 2,000 years. Now, as more glaciers and adjacent ice patches melt because of human-caused climate change, much older objects are starting to emerge. The researchers write in their update that the picture has changed dramatically: the oldest ice contains the oldest finds, and in many places ice that survived for thousands of years is now beginning to disappear completely.

"We have always acknowledged this contradiction and the reality behind our work," said Espen Finstad, the glacial archaeologist who leads the Secrets of the Ice project, in an interview with Science Norway's Ida Irene Bergstrøm. "But this is the first time it has truly affected us on an emotional level. This year, there was a much deeper sense of seriousness and sadness ... It's brutal. And this year, that reality struck us more forcefully than ever before." Finstad told Science Norway that researchers feel pessimistic about the future of Jotunheimen's glaciers. Based on what the team has witnessed over the past two decades, they suspect the ice at many of the archaeological sites will completely disappear within the next 20 years.

"There has been ice here for 6,000-7,000 years," Finstad said. "Nature has been warning us and sending signals for many years. But now it's giving up. Now it is simply going to melt." The researchers hope to continue their excavations before winter fully sets in, but in the meantime they are securing, documenting and preparing the latest finds. The artifacts are currently being housed at the Norwegian Mountain Center in Lom, where some are displayed in a special refrigerated display case, before moving to the Museum of Cultural History in December for further processing and conservation.

The finds matter beyond archaeology because the Norway ice arrows rewrite what we know about how humans used high mountain landscapes thousands of years before farming arrived in the region. Every one of the Norway ice arrows recovered from the ice is a datapoint about hunting routes, technology and climate adaptation across millennia. The team has previously traced similar finds to ancient reindeer migration corridors, suggesting that the ice patches where arrows are emerging today were once prime hunting grounds. For young researchers on the expedition, working alongside veteran glacial archaeologists, the three weeks in Jotunheimen offered a front-row seat to both a scientific bonanza and a vanishing world.

What happens next is a race. Each summer of melting exposes new material while destroying the freezer that preserved it, and the scientists know their window is closing. The deeper lesson of the Norway ice arrows, as Finstad frames it, is that the excitement of discovery and the grief of loss are now inseparable in glacial archaeology. The same warming that reveals a 5,000-year-old arrowhead is erasing the archive that made its preservation possible. It is the latest in a grim run of climate news this week: the UN food agency has warned of a "narrowing window" for forest restoration, and young activists crashed Climate Week NYC to demand faster action. Whether future expeditions can keep pace with the melt is an open question, but the researchers say they intend to keep documenting as long as the Norway ice arrows keep emerging from the disappearing ice.