Archaeologists excavating an ancient Egyptian burial chamber near Luxor have discovered the mummified remains of 16 people alongside a pet dog, crammed inside a tomb reused by mourners for more than 700 years.
Researchers examining Side Chamber 3 of Tomb TT 209 at the Theban Necropolis found bodies stacked directly on top of one another, with later burials carefully squeezed into whatever space remained between remains interred centuries earlier.
Among the most unusual finds in the chamber was a mummified dog placed directly on top of the remains of a man and a woman. Researchers believe the canine may have shared a special bond with the couple or was placed there to serve as a guide to the afterlife.
"We found a total of 16 mummified human individuals, a mummified dog, and a disturbed deposit containing the remains of at least four individuals," said first author Dr Jared Carballo-Pérez, a researcher at the University of La Laguna in Spain.
"The detailed study of the bodies indicates neither chaotic accumulation nor a loss of the original ritual over time," Dr Carballo-Pérez added. "Rather, there was a spatial logic in which each new deposition was adapted to the presence of previous bodies - a kind of funerary memory in the processes of reuse."
Centuries of tomb reuse near Luxor
The discovery was made during an excavation of Tomb TT 209, one of hundreds of burial sites situated within the ancient Necropolis. Archaeologists excavated the chamber, photographed the mummies, and created detailed sketches and written descriptions to document the exact position and orientation of every body.
The burial site forms part of the wider Theban Necropolis, a vast ancient burial ground located on the west bank of the Nile River opposite the modern city of Luxor. Used for more than 2,000 years, the necropolis contains over 400 documented tombs constructed for pharaohs, nobles, officials, and other prominent figures, including famous royal resting places in the Valley of the Kings and the Valley of the Queens.
For the earliest burials in the chamber, which date back 2,500 years, researchers uncovered relatively separated interments where bodies were laid to rest inside wooden coffins.
"The earliest individuals buried here appear to have been of high social standing, as they were interred in coffins, with funerary nets and amulets, and with an assemblage containing costly items," said senior author Dr Molinero Polo.
Evolution of ancient Egyptian burial rituals
Burial practices inside the chamber changed dramatically towards the end of the 25th dynasty and the Persian period, between roughly 680 BC and 404 BC, when mourners began inserting bodies into any available space.
The lack of space triggered a noticeable change in how the dead were positioned. While earlier mummies were buried with their arms stretched out along their sides, later burials were laid with their arms folded inward. Mourners also began stacking bodies vertically on top of one another to maximize the available room.
"The bodies buried in vertical superposition did not have coffins but were carefully mummified," Dr Polo explained. "They also can be associated with upright jars that point to a specific ritual not found in the earlier phases of the tomb's use."
In the southeastern section of the chamber, four human mummies and one mummified dog were discovered stacked on top of one another. Archaeologists noted that cataloged mummy M9, the dog, rested directly over mummy M7, a man, and mummy M6, a woman.
"One detail I find quite beautiful is the presence of a mummified dog placed directly on top of the mummies of a man and a woman," Dr Carballo-Pérez said. "This could indicate a close relationship between these human individuals and the animal, an idea that I think is quite easy to empathize with."
Researchers noted the animal's placement could also reflect an evolving ritual practice, with the dog taking on the role of a symbolic helper assisting the deceased on their journey to the afterlife.
A dynamic mortuary environment
Despite the increasingly crowded conditions, experts emphasized that the tomb was not a chaotic mass grave. Instead, every new interment adapted to the layout of the bodies already present in the space.
In a study published in the journal Frontiers in Environmental Archaeology, the authors described how the chamber transformed over time.
"Overall, the chamber can be understood as a funerary space with an accumulative biography, in which reuse did not simply involve the addition of burials, but the progressive transformation of the organization, materiality, and meaning of the space itself," the researchers wrote.
"Rather than acting as a passive container, the chamber can be interpreted as a dynamic mortuary environment where bodies, objects, sediments, and architectural constraints shaped the material construction of funerary continuity over time," the paper added.
The team also identified a disturbed deposit containing the remains of at least four additional individuals, indicating that earlier burials had been disturbed by later mourners laying their own dead to rest.
Health risks from ancient mummies
The findings in Luxor follow recent warnings from researchers regarding the growing global trade in mummified human remains. Experts warned last week that buying and selling centuries-old hands, feet, and heads could unleash ancient fungal spores and toxic preservation compounds.
Dormant fungal spores can become airborne when mummies are moved or disturbed, posing severe health risks to the living. Exposure to these ancient microorganisms and chemical agents can cause severe health complications, including skin lesions, lung irritation, kidney problems, liver damage, brain damage, and cancer.
