Researchers at the Americas at the University of Bonn have discovered a mass grave in an artificial cave in the historical Maya city of Uxul (Mexico). Marks on the bones indicate that the individuals buried in the cave were decapitated and dismembered around 1,400 years ago. The researchers believe that the victims were either prisoners of war or nobles from Uxul itself.
Since 2008, archaeologists of the University of Bonn have been excavating in the historical Maya city of Uxul in the Mexican state of Campeche. They hope to find more information about the origins and the collapse of regional states in the Maya lowlands. Dr. Nikolai Grube and Kai Delvendahl of the University of Bonn, as well as Dr. Antonio Benavides of the Mexican National Institute of Anthropology and History, were funded by the Deutsche Forschungsgemeinschaft (DFG). They have now uncovered the skeletons of 24 people in an approximately 32 square meter artificial cave that had formerly been used as a water reservoir.
"Aside from the large number of interred individuals, it already became apparent during the excavation that the skeletons were no longer in their original anatomical articulation", says the archaeologist Nicolaus Seefeld, who studied the sophisticated water supply system of Uxul for his doctoral thesis and discovered the mass grave. All of the skulls were lying scattered around the interior of the cave, in no relation to the rest of the bodies.
Even the majority of the mandibles were separated from the heads. In contrast, detailed examination determined that the limbs of the legs and hands were in some cases completely preserved. "This observation excluded the possibility that this mass grave was a so-called secondary burial, in which the bones of the deceased are placed at a new location", says Seefeld.
The archaeologists found that the spatial pattern of the bones indicates that the corpses of the 24 people had been decapitated and dismembered. Signs of violent death could be proven for the majority. "The observed hatchet marks on the cervical vertebra are a clear indication of decapitation", Seefeld reports. The forehead of another skull shows an unhealed skull fracture, probably caused by a blow from a cudgel. In addition, numerous skulls show signs of cutting with sharp objects, which might originate from stone hatchets.
Due to their being covered by clay, the bones are so well-preserved that it was possible to distinguish the age and sex of 15 of the 24 individuals. These include 13 men and two women who were aged from 18 to 42 at the time of their death. Analysis of teeth and bones showed that several of the deceased suffered from malnutrition and had lost several teeth to tooth decay.
Some of the dead had tooth inserts of jade. The scientists interpret this as a sign of high social status. However, the archaeologists don't yet know whether they are prisoners of war from another Maya city that were sacrificed in Uxul or nobles from Uxul itself. Only with the help of isotope analysis will it be possible to clarify whether the dead were members of the local population or originate from another region of the lowlands. "However, the discovery of the mass grave proves that the dismemberment of prisoners of war and opponents often represented in Maya art was in fact practiced", says Grube.
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