At Scotland’s ancient Cladh Hallan, homes were full of human bones
In 2001, archaeologists were painstakingly excavating a dwelling at the Bronze-Age site of Cladh Hallan in the Outer Hebrides islands off of Scotland’s northwestern coast. The house had been oval in shape, with a low door leading to an interior hearth. Other conveniences included sunken storage areas and stone-lined water storage tanks. Under the floors of these houses, though, and under the feet of the occupants, was a fascinating feature that evokes the opening scenes of a classic horror film.
As the archaeologists slowly dug through the floor of the structure, they came unexpectedly upon a human skeleton, legs tucked up in the fetal position. Another skeleton, similarly arranged, was found beneath a different roundhouse’s floor. These people had clearly been laid to rest with care, with stones laid out around them.
When archaeologists began to study the remains, though, they were staggered to learn that each body’s parts had not all come from the same person. These were composite mummies, assembled with the remains of at least six people who had died over the span of two hundred years. But this wasn’t a jumbled-together macabre collection or evidence of a Bronze-Age serial killer. These bodies had been treated carefully and buried in stone-lined graves. So what were the people of Cladh Hallan doing with the dug-up remains of their ancestors?
What was Cladh Hallan? And what mummies were found there?
More than four thousand years ago, early farmers began to work the soil on the Outer Hebrides islands off of Scotland’s northwestern coast. At the time, the Roman Empire and even ancient Greece were specks on the chronological horizon. Along the Aegean coast, Minoans and Mycenaeans were building palaces and cities. Farther north, Germanic tribes were exporting amber and expertly forging bronze and gold artifacts.
At Cladh Hallan, early farmers grew barley, herded sheep, and foraged the abundant resources on the island’s beaches. Their descendants continued to thrive on the island for centuries, the population grew, and so did the need for land.

Nearly a thousand years into Cladh Hallan’s occupation, with living space on the small island becoming harder to find, people started building over the burial grounds of their ancestors. But the islanders were definitely aware of the graves beneath their feet—in fact, they went out of their way to acknowledge the people buried in them.
Residents of Cladh Hallan dug down into these older burials containing both cremated and unburnt remains, removing some parts and leaving the rest undisturbed. Then they assembled the exhumed remains into the requisite anatomical combinations that modern archaeologists have found centuries later. Once this was done, the composite bodies were once again laid to rest under the foundations of the roundhouses.
The best mummy finds at Cladh Hallan
The two best-known adult skeletons from Cladh Hallan are the most unusual. Each was found under a roundhouse. One skeleton was identified as male, the other female, based on their pelvic bones. The bodies date to between 1300 and 1500 BCE…mostly.
The skeleton originally identified as a woman had a man’s skull where her own head used to be. Two of the teeth were missing from the skull, and those had been placed in each of the woman’s hands. By radiocarbon dating the bones, researchers found that the skull actually belonged to a man who had died at least a century earlier, perhaps a relative from an older generation.
The body originally identified as male was put together from three different people—all confirmed as male through DNA testing. The burial was made up of a man’s torso, a second man’s skull, and a third man’s jawbone. Each of these men had died at different times over the span of about 150 years. Again, ancestry and family identity seem to play a big part in these re-burials.
It isn’t terribly uncommon for cultures to include their deceased loved ones in celebratory, ritual, or even daily activities. Every few years, families in the Toraja region of Sulawesi, Indonesia exhume the remains of loved ones, clean them, dress them in fresh garments, and honor them with festivals.
South Korean “death beads” are made from the cremated remains of family members and displayed in the home.
Pre-colonial Inca religious tradition included regular ceremonial processions featuring the remains of people “buried” in natural alcoves in the Andes mountains and mummified by the dry, cold mountain air. The Cladh Hallan skeletons had once been mummified as well, though this was not mummification as it was practiced in ancient Egypt, nor like the mountainside Inca tradition.

First, the bodies were tightly wrapped in fabric, which kept the bones and soft tissue flexed into the fetal position. This is why the limbs remained so tightly curled towards the torso, and why the bodies were so well-preserved. Archaeologists were able to identify this type of preservation based on microscopic changes to the surfaces of the bones from the acidic environment of the peat bogs in which the bodies were submerged after wrapping.
Why peat is so good at preserving bodies
Peat is a dense, wet accumulation of centuries of decaying plant matter, and is a feature of lots of landscapes, particularly in the northern latitudes. People have used dried peat as fuel for thousands of years, since it burns well and slowly, and is plentiful in areas where there aren’t a lot of trees for firewood. Peat from the Scottish isles, notably, is responsible for the smoky, earthy taste characteristic of Scotch whiskey.
Peat bogs are so packed with plant material that there is almost no oxygen present, which is great for preservation, as is the typically cool temperature beneath the peat’s surface. The lack of oxygen keeps microbes and other critters from consuming the body’s soft tissues, and the tannic acid from all the decaying plants in the bog turns skin dark and leathery.
By first burying the bodies of family members under layers of peat, the people at Cladh Hallan ensured that the remains would be as intact as possible when later generations exhumed them. This not only means that the Bronze Age inhabitants of the island were well aware of peat’s preservative properties, but that the entire process was a deliberate sequence of events.
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But why did people in Cladh Hallan make these many-part mummies?
Archaeologists interpret the pieced-together reburials as a part of a social or religious tradition that emphasized family lines and reverence for ancestors. Stones clearly marked the graves under the roundhouses, so the homes’ placement was definitely on purpose.
The initial bog burials were deliberately used as a source of family remains, and the parts that composed the buried skeletons seem to have been deliberately chosen, though we may never know why or how. It seems as though ancestor-recycling may have been a regular process at Cladh Hallan in the later part of the Bronze Age, as older generations gave way to new.
Archaeologists also surmise that the exhumed mummified remains were initially kept above ground, maybe in a special place in the house, and included as a part of daily life. These multi-ancestor figures might have been consulted when important decisions were made, or they may have been seen as household protectors.
Archaeology can never really uncover the full story of what people thought and believed thousands of years ago. Thoughts do not fossilize, and decay and weathering affect even the best-preserved archaeological sites.
We will probably never know exactly what it was like to live at Cladh Hallan when it was a busy, thriving settlement. We may never understand how the people that lived there conceived of their world, or how they thought about spirituality. Thanks to the burials at Cladh Hallan, though, we have a tantalizing glimpse of how people may have seen death in their universe as a continuous, pieced-together chain of lives lived over generations.
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