Archaeologists have discovered Britain’s largest known Viking-era building, offering new insights into early medieval life. The structure, buried beneath a field at High Tarns Farm in northwest England, was uncovered by the researchers and more than 50 volunteers.
Researchers affiliated with Grampus Heritage, a nonprofit organization specializing in archaeology, have identified the remains of a substantial hall measuring approximately 160 feet in length and 50 feet in width. This discovery, made last summer, indicates that the site was an important assembly location during the Viking Age.
“The significance of this discovery, in shedding light on the early medieval period and social structure in rural Cumbria and more widely, is hard to overstate,” archaeologist Mark Graham said.
Clues hidden beneath centuries of soil
Excavation efforts revealed ten post holes that helped determine the building’s size and shape. A kiln for drying grains and a charcoal production pit were also uncovered. Radiocarbon dating of one post hole placed its origins between 990 and 1040, confirming the structure’s Viking-era roots.
Similar buildings have been found in Denmark and other Scandinavian countries, where large manor farms were common.
While Viking history in Cumbria is well-documented, physical remains of buildings from that period are rare, often lost beneath later settlements and farmland.
How was the site discovered?
Interest in the site began in 2022 when aerial photographs revealed crop marks suggesting something hidden below. A geophysical survey conducted the following year confirmed the presence of an underground structure, prompting excavation.
Researchers initially suspected the site was connected to Holme Cultram, a nearby 12th-century Cistercian monastery. However, the excavation revealed a much older Viking-age structure, changing the narrative of the region’s history.
Neil and Irene Armstrong, who have lived on the farm for over two decades, temporarily moved their heifers from the field to allow the excavation to proceed. Over 12 days, local volunteers carefully excavated trenches, uncovering remnants of the structure, various artifacts, and thousands of tiny oat grains.
“That excavation [was] totally delivered by community volunteers giving their time every day to come out to the trenches and uncover our shared past,” Graham tells BBC Radio Cumbria.
The team collected samples from a post hole and the kiln, which provided valuable dating evidence. However, much of the original structure has been plowed over by centuries of farming, making its preservation exceptionally rare.
Finding Viking-era buildings in Britain is difficult, as most have been destroyed or built over. This discovery provides a rare glimpse into how Viking settlers lived and organized their communities.
“It’s crazy what they’ve found in such a small space when you think about it,” Irene told the News & Star. “We’ve had a few farmers wishing they had something like this in their field.”
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