Portugal's Public Prosecutor has opened a criminal investigation into the destruction of prehistoric burial chambers and a Roman villa near Évora. The monuments were obliterated between 2016 and early 2017 during agricultural development on the Herdade das Atafonas estate. The case only became public recently following investigative reporting by Portuguese broadcaster SIC, and it underscores critical gaps in how Portugal protects archaeological sites on private land despite existing legal frameworks.
The inquiry, confirmed this month by the Procuradoria-Geral da República (PGR), centers on walnut tree cultivation by the agricultural firm Nogam in Torre de Coelheiros parish. The destruction of these ancient monuments raises urgent questions about municipal oversight, developer responsibility, and enforcement of heritage protections.
What Was Destroyed
The vanished monuments date back millennia. The two antas—megalithic dolmens used as communal burial chambers during the Neolithic period—were already mapped in the Évora Municipal Master Plan (PDM) at the time of the plantation, according to Leonor Rocha, an archaeologist and coordinator of the archaeology program at the University of Évora.
The villa romana, a rural estate from the Roman occupation period, was known to municipal archaeologists but had not yet been formally added to the master plan when Nogam obtained clearance to proceed with land preparation. Rocha, who visited the sites recently, confirmed that the villa location is still identifiable by ceramic fragments and building materials scattered on the surface, while the dolmens have been entirely erased by deep plowing and tree planting.
"There are no surface traces whatsoever of the two burial chambers," Rocha told news agency Lusa. "The Roman villa is full of materials at the surface—there is no doubt where it is located."
The Bureaucratic Breakdown
How did a major agricultural project proceed without triggering archaeological protections? The answer involves a cascade of institutional failures at the municipal level.
Pedro Pinho, agricultural director for the Sogepoc Group (Nogam's parent company), insists the firm was unaware of any archaeological constraints. "We requested an opinion from the municipality itself, and we have the clearance document stating there were no restrictions—no conditions were imposed, so the plantation went ahead," Pinho explained, expressing surprise when informed of the destruction years later. The company has pledged full cooperation in any remediation efforts.
The Évora City Council, however, issued a land-use certificate that apparently failed to flag the protected monuments. Mayor Carlos Zorrinho has opened an internal inquiry to determine whether the omission resulted from service coordination failures, negligence, or another cause. "The key is to understand what happened and improve procedures so this does not recur," Zorrinho stated.
Rocha was more pointed in her assessment. "How is it that within a single organization—in this case, a municipal council—there is a request for an opinion due to an agricultural project, and no one consults the master plan or asks the archaeology colleagues what knowledge they had of that area that could affect heritage?" she said.
The archaeologist noted that at least the two dolmens should have been flagged, since they were already recorded in the PDM. The Roman villa, while known to specialists, had not yet made it into the official planning document—an administrative lag that left it legally invisible during the licensing process.
Legal Consequences and Enforcement Reality
Portugal's Law 107/2001 (Cultural Heritage Framework Law) makes the destruction of archaeological heritage punishable by up to 3 years in prison or fines equivalent to 360 daily units for intentional acts, and up to 1 year or 120 daily units for negligence. Administrative fines for heritage infractions can reach €25,000 for individuals and €500,000 for corporations, depending on severity. However, convictions remain rare, and these legal penalties have rarely been applied in practice.
In a high-profile case from the Vale do Côa Archaeological Park, two men who vandalized prehistoric rock engravings in 2017 were charged and faced a civil damages claim of €125,000, but were ultimately acquitted in 2021 by a local court. The outcome illustrated the practical difficulties in securing penalties even when perpetrators are identified and confess.
Regional Push for Accountability
The Alentejo Regional Coordination and Development Commission (CCDR) is preparing its own formal complaint to the prosecutor's office. Henrique Sim-Sim, vice president for culture at the CCDR, emphasized that the agency is collecting evidence to support criminal charges.
"We must not let this pass, and it is also our responsibility to prepare these cases for the Public Prosecutor so that such incidents do not repeat—because there have already been too many in the Alentejo, and we intend to end this once and for all," Sim-Sim said.
Simultaneously, the CCDR is negotiating with Nogam to salvage whatever archaeological information remains recoverable, particularly from the Roman villa site where surface materials could still yield valuable data if properly excavated and documented.
A Wider Crisis in the Alentejo
No official comprehensive tally exists for how many archaeological sites have been destroyed or damaged in the Alentejo over the past decade, according to regional heritage authorities, but media reports and heritage advocacy groups point to a troubling pattern. Intensive agriculture—especially deep-plowing for almond and olive orchards—has been implicated in numerous cases:
• In 2017, a dolmen at Herdade do Zambujal in Vidigueira was lost to land-clearing operations, along with multiple sites in Beja, Alvito, Ferreira do Alentejo, and Arronches.
• In 2020, a Neolithic dolmen and other remains on the Herdade Vale da Moura estate, also in Torre de Coelheiros, were leveled for almond cultivation despite prior warnings to the landowner.
• In early 2021, the Direção Regional de Cultura do Alentejo filed a criminal complaint over the destruction of two Roman-era sites at the Herdade da Negaça, again in Torre de Coelheiros, caused by almond planting and irrigation trenching.
In response to what it termed a "dramatic and systematic disappearance" of the region's cultural landscape, the regional culture directorate initiated emergency classification proceedings in February 2022 for 2,049 megalithic monuments across the Alentejo. The measure, which grants interim legal protection pending full classification, aims to prevent further losses while bureaucratic processes catch up.
What This Means for Residents
For Alentejo landowners and agricultural operators, this case serves as a critical warning: ignorance of archaeological constraints is not a legal defense. Before undertaking any soil disturbance—whether for construction, tree planting, or infrastructure—property owners must verify restrictions through their municipal Plano Diretor Municipal (PDM) office, which maintains these records. Many municipalities now maintain online portals where residents can check their property against archaeological inventories. For projects involving significant ground disturbance, the Direção-Geral do Património Cultural (DGPC) can require preventive archaeological surveys at the developer's expense.
Municipalities, in turn, face mounting pressure to digitize and integrate archaeological inventories with land-use licensing systems to prevent omissions like the one that occurred in Évora.
For Portugal as a whole, the case highlights an uncomfortable reality: despite robust legal protections on paper, thousands of ancient monuments remain vulnerable to agricultural and development pressures. The success of the emergency classification initiative and the outcomes of ongoing criminal investigations will likely set the tone for heritage enforcement in the years ahead.
What Happens Next
The Nogam case remains under investigation, with no timeline yet announced for formal charges or trial. The CCDR's formal complaint will add momentum to the Public Prosecutor's inquiry. Residents can expect updates as the investigation progresses and will likely see heightened scrutiny of agricultural licensing in heritage-rich areas of the Alentejo.
