Spanish dig uncovers 16 horses slaughtered in a sanctuary of the 5th century BC

The Tartessian staircase found in Turuñuelo de Guareña (Badajoz) [Credit: S. Burgos/ C. Martinez]

Staircase and remains of animals at the site of the Turunuelo [Credit: IAM/CSIC]

Remains of horses and other animals found at the site [Credit: IAM/CSIC]

Excavation at the site of the Turunuelo de Guareña, Badajoz [Credit: IAM/CSIC]

Bath at the site of the Turunuelo [Credit: IAM/CSIC]

Three-dimensional reconstruction tartésico Turuñuelo shrine in the town of Guareña, Badajoz [Credit: IAM/CSIC]

TANN

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Without the proper context, the sight of a staircase leading down into a great hole in the ground might not look like much. But this hole is part of an archaeological dig that has uncovered an enormous building dating back 2,500 years, part of the famed Tartessos culture. The find was made in the western Spanish region of Extremadura, a rural land renowned for its cork oak plantations, its scorching summers, and for being the birthplace of conquistadors.In the fifth century before the Christian era, there was a massive two-story building standing here, in the demarcation of Las Vegas del Guadiana, in Badajoz province. The building – the first surviving one of its kind from that era to be discovered – had a monumental staircase rising two-and-a-half meters. And it was made with materials and techniques that researchers thought had not been in use in the Western Mediterranean until much later.Half of the steps were made by stacking up large, rectangular blocks, but the builders did not use hewn stone as the Greeks did. Instead, they used a mortar made with calcium oxide and powdered granite, which was probably poured into molds, in something like an early form of cement. Except that this took place a full century before the first documented cement-like material, opus caementicium, began to be used in the Roman Empire.The Turuñuelo de Guareña site, where digging began in 2015, has already yielded several surprises because of its sheer size (at one hectare, it is the biggest known Tartessian-era site), the wealth of the artefacts that have turned up, and their extraordinary state of conservation.All kinds of jewelry, lance tips, containers, seeds, fabric fragments, bronze grills and enormous pots have emerged from the earth, promising to shed new light on a pre-Roman civilization that occupied the southwest of the Iberian peninsula in the first millennium before the Christian era.All kinds of myths and legends have sprung up around the Tartessians, particularly because of their mysterious decadence and abrupt end. This is partly due to the shortage of physical evidence that they left behind. But a team led by two archaeologists from Spain’s Higher Center for Scientific Research (CSIC), Esther Rodríguez and Sebastián Celestino – who is also director of the Mérida Archaeology Institute – is fast making up for the dearth of Tartessian cultural remains. And only 10% of the building has been unearthed so far.“A staircase is a unique architectural element of something that we didn’t think they were capable of executing,” explains Rodríguez. “There were stairs in use during the Peninsula’s early history, but at a later date. All we were aware of from this period was the odd set of two or three stone-and-adobe steps to make up for the sloping ground.”In this case, however, there are 10 steps measuring over two meters across, 40 centimeters wide and 22 cm high. The top five steps are covered with slabs of slate, and the bottom ones are made with the granite-and-lime mortar described earlier.“The most surprising part was its depth,” adds Celestino. “Two-and-a-half meters means that there is another floor underneath, and that we are now accessing the top floor.”There had been some speculation as to the existence of these types of buildings during Tartessian times, based on biblical descriptions. But none had ever been found. “This will be the first building to conserve both floors,” says Celestino.To one side of this astounding staircase, archaeologists found the bodies of two horses placed in an anatomical position, wearing all of their apparel, which clearly suggests a ritual sacrifice: these animals were a sign of luxury at the time, and not killed for food. On the other side of the staircase, however, there are the remains of a cow, which dwellers apparently feasted on.All of the above had investigators positing that there was a great celebration held at the site, right before the building was destroyed. However, the discoveries did not end there. At the foot of the staircase the archaeologists discovered the remains of 16 horses, two bulls and a pig, all of which tell the story of a costly sacrifice as a ritual of closure before the final destruction of the sanctuary."The sacrifice consisted of a great offering to the gods before finally leaving the place", explains Celestino. "It gives an idea of the enormous wealth of the site, because the horse was an element of prestige. In addition to the numerous animals that have been slaughtered and the discovery at the site of numerous amphorae and baskets with cereals and other items of great value, we get some idea of the importance of this final sacrifice prior to the destruction of the monument and its subsequent abandonment.""Equally striking", says Celestino, "was the discovery of a complete regalia for the celebration of a communal feast in the south room. It is a set of very good quality wares, among which stands out a huge cauldron, two jars, a grill, several skewers for the meat, a burner, strainers and other types of utensils... all made in bronze. There were also a large number of plates and cups painted with red bands imitating Greek wares. In the surroundings of the room were many bones and shells resulting from the final feast."Most of the buildings from the era were located in the middle valley of the Guadiana River, an area that went through a deep economic crisis in the 6th century BC, then sustained large waves of immigration emanating from the central nucleus of Tartessos on the Guadalquivir, in modern-day Huelva.In the late 5th or early 4th century, faced with the imminent arrival of Celtic tribes from the north, the local residents decided to raze their own buildings rather than watch them get pillaged by the invaders.The building in Turuñuelo de Guareña was set on fire and buried under layers of mud retrieved from the riverbed of the Guadiana. But its formidable structure, with walls several meters deep, allowed it to remain standing in spite of everything.There is an added difficulty in that this is uncharted territory: the building is unlike any other Tartessian construction found in the area so far, such as the sanctuary of Cancho Roano in Zalamea de la Serena; or La Matain Campanario, which played more of an economic role. This building has some of the traits of a palace, but also of a great funeral monument.“The upper level, with its various altars, has a crystal-clear ritual function, but religion was mixed in with everything else back then,” explains Celestino. “There are elements that make one think about burials, such as the fact that there are no built floors, despite the lavishness of every other element. Yet the fact that there were two floors suggests something else.”More answers will come when the other 90% of the building emerges from amid the fields of tomato plants in Las Vegas del Guadiana.