A Human Skeleton Was Found Inside a Mysterious Stone Structure in Scotland. Archaeologists Still Don’t Know Why It Was Buried There

Built with fitted stone and a clay-like material that may have helped retain liquid, the unusual structure has left researchers searching for an explanation

Sarah Kuta | Daily Correspondent

August 25, 2026 1:51 p.m.

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A human skeleton found inside a mysterious stone-lined structure in northern Scotland may date to the Iron Age, but archaeologists are still trying to determine what the unusual feature was used for—and why someone was laid to rest there.

Researchers with Highland Archaeology Services, a commercial archaeology company, discovered the unusual burial in the Scottish Highlands earlier this year. They were working near the town of Dornoch, roughly 200 miles north of Edinburgh, ahead of an expansion of a local quarry.

As crews stripped away the topsoil, a ring of stones began to emerge, Caroline McMorran reports for the Northern Times. As they kept digging, they uncovered an oval-shaped depression that measured around 10 feet long, 6.5 feet wide and 3 feet deep. It was lined with stone, with a slabbed floor and steep steps leading down into the structure.

Inside the pit, archaeologists found a human skeleton, animal bones, and deposits containing charcoal and chunks of burnt wood. They also recovered a broken steatite, or soapstone, bowl and a fragment of a shale bangle. Those artifacts, along with the nearby pits and postholes that may represent the remains of roundhouses (a kind of circular dwelling commonly found in ancient Scotland), have led archaeologists to tentatively date the site to the Iron Age.

“We have consulted a few different experts to ask their opinion on what it might be, but it is a bit of a mystery,” Lachlan McKeggie, co-director of Highland Archaeology Services, tells the Northern Times. “No one has seen anything like it before.”

McKeggie says that the discovery resembles a few previously identified types of structures, although its shape is unusual. He suggests the sunken structure could be a souterrain, a kind of underground room used to both store food and hide from enemies. Alternatively, it might have been incorporated into an aboveground building, possibly a roundhouse. The unusual feature could also have served as a ritual well, although its exact purpose remains uncertain.

“I like to imagine that it’s an Iron Age hot tub, but that is speculative,” McKeggie adds. “It will have been built with a purpose, but we just don’t know what that was yet.”

The structure’s stones appear to have been carefully fitted without conventional mortar, although the lower levels were bonded with a viscous, clay-like material. Archaeologists think this may have helped the structure hold liquid, although its relatively small size would have limited its capacity. Its narrow entrance and steep staircase also make a straightforward water storage function difficult to explain.

Other elements of the pit offer additional clues about the activities that may have taken place at the site.

One of the stones lodged in the southern wall appears to have been repurposed. Researchers think it might have served as a large knocking or grinding stone, possibly for removing the husks from grain or preparing other raw materials for use and consumption, before being incorporated into the structure.

Researchers haven’t yet been able to determine much about the person buried in the pit. Further analysis of the skeleton may reveal more about the individual’s age, biological sex, and other aspects of their life and health, although it may not be possible to determine a cause of death. For now, the archaeologists describe the individual as a probable adult woman.

The human remains were found “lying partly on infilled deposits, suggesting they were put in during the process of infilling,” according to an update posted on the company’s website.

One potential explanation is that the burial served as part of a ritual closing event, in which the structure was deliberately decommissioned, with the interment incorporated into that process. Another possibility is that the already decommissioned structure simply provided a suitable place to deposit the body.

This wouldn’t be the first time that experts have unearthed evidence of human and animal remains being deposited during the deliberate closure of archaeological structures in Scotland. At High Pasture Cave on the Isle of Skye, for instance, researchers found such remains placed at the top of a previously filled stairwell during the site’s formal closure, which took place between roughly 25 and 90 C.E.

Archaeologists have documented and excavated the Dornoch structure, and further post-excavation analysis is planned. The team hopes that the finds can eventually be allocated to a local museum after they have been studied and processed through Scotland’s Treasure Trove system.

Iron Age burials are “fairly rare finds in general” in northern Scotland, McKeggie tells Live Science’s Owen Jarus. Ancient human remains are often poorly preserved in the region’s acidic soils, the company notes in a Facebook post.

The Dornoch burial was found about a mile from the prehistoric settlement at Camore Wood, where archaeologists have found evidence of both Bronze Age and Iron Age occupation. However, at this point, it’s unclear whether the burial has any connection to the settlement.

Sarah Kuta is a writer and editor based in Longmont, Colorado. She covers history, science, travel, food and beverage, sustainability, economics and other topics.