A skid-steer loader, deep trenches, and building materials in the middle of a protected archaeological site: at Huaca Los Sauces near Pimentel, around 900 square meters of ground have been altered by unauthorized work. Some excavations reach up to 1.5 meters deep. Especially explosive: authorities had already documented unauthorized work and damage to a pre-Columbian wall there in 2024.
The alarm was raised by local residents. They noticed unusual work on the archaeological site in the Lambayeque region and informed the authorities. Staff from the cultural authority subsequently arrived together with police and municipal security forces. On site, it quickly became apparent that this was not a minor intervention in the ground.
900 SQUARE METERS AFFECTED!
According to the authorities, earthworks were carried out over an area of approximately 900 square meters. Parts of the ground had been excavated or leveled. In the process, areas with a depth of up to 1.5 meters were created. Apparently, the work was not done with just shovels and spades. The task force found a skid-steer loader on the premises. The machine was confiscated in connection with the investigation.
This now raises the question of what might have been damaged or destroyed by the massive earth movements beneath the surface.
BUILDING MATERIALS LAY IN THE MIDDLE OF THE SITE
The situation became even more striking during the further inspection. According to the information provided so far, the authorities documented metal fencing elements, two newly installed steel supports, cement bags, sand, stones, and water containers.
The competent authorities must clarify exactly what work was planned there and who is responsible for it. One thing is certain so far: according to the cultural authority, there was no corresponding permit for the detected interventions within the archaeological area.
AND NOW IT GETS EXPLOSIVE
Huaca Los Sauces has been known to the authorities for some time. As early as 2024, the Peruvian Ministry of Culture documented unauthorized excavations, leveling work, and other interventions there. At that time, even particularly serious damage was identified: part of a pre-Columbian adobe wall had been destroyed.
According to official records, the wall was approximately 80 centimeters wide and three meters high. A section about four meters long was affected. Even then, it was clear that this archaeological site was exposed to significant dangers from human intervention.
THE STATE PLACED THE HUACA UNDER PROTECTION
In response to the identified dangers, the Ministry of Culture issued a provisional protection regulation for Huaca Los Sauces in July 2024. The reason for this was explicitly the human interventions in the archaeological site. This protection has not simply expired in the meantime. In 2026, the regulation was extended for another two years.
This is exactly what makes the current case particularly remarkable. Although the threat has been officially documented since at least 2024 and a protection regulation remains in place, massive earth movements have now been detected within the site once again.
WHO IS JUST KEEPING ON DIGGING HERE?
Who initiated the work? What was intended to be built on the site? How long had work already been going on there? And above all: what archaeological structures might have been located in the soil layers that have now been disturbed? Investigations must provide clarity on these points.
On the other hand, it is already certain that the responsible agencies intervened after the residents' tip-off. In addition to the Dirección Desconcentrada de Cultura de Lambayeque, the tourist police, the Pimentel police, and the municipal Serenazgo were involved. The skid-steer loader was confiscated and the changes to the site were documented.
ALREADY AN INVASION ALARM IN 2024
The municipality of Pimentel was also dealing with Huaca Los Sauces two years ago. At that time, the municipal council ordered an inspection of the site after suspicions of a possible occupation of the archaeological area had arisen.
This reveals a much larger picture than just a single recent incident. In 2024, unauthorized earthworks are discovered and a pre-Columbian wall is partially destroyed. The authorities impose a protective measure and the municipality addresses a potential occupation of the site. In 2026, the protection is extended. Now, the authorities find earthworks there again – this time over approximately 900 square meters, in some places 1.5 meters deep and using a skid-steer loader.
WHY A DEPTH OF 1.5 METERS IS A PROBLEM
For a Huaca, the true value does not lie only in the structures visible above the ground. Beneath the surface, there may be walls, ceramics, burials, remains of buildings, and different historical soil layers. The importance of such archaeological contexts is demonstrated, for example, by Huaca Rajada–Sipán, where the undisturbed tomb of the Lord of Sipán provided fundamental insights into the Moche culture.
If archaeological soil is removed and mixed by heavy machinery, such contexts can be irretrievably lost. Only a detailed examination can show what was actually damaged in the 900 square meters affected.
OF ALL PLACES, IN LAMBAYEQUE
The case is occurring in one of Peru's most archaeologically significant regions. Lambayeque and the neighboring area around Chiclayo are known for their pre-Columbian past. Cultures such as Moche and Lambayeque (or Sicán) left behind temple complexes, tombs, monumental clay structures, ceramics, and extraordinary metalwork.
The diversity of this history is shown by several important sites in the region. The approximately 4,500-year-old Huaca Ventarrón documents a much earlier epoch, while the Pyramids of Túcume are closely linked to the Lambayeque or Sicán culture.
The famous Lord of Sipán was found at Huaca Rajada–Sipán east of Chiclayo. His most significant grave goods are now located in the Museo Tumbas Reales de Sipán in Lambayeque.
However, not every archaeological site has a large museum, security guards, and international renown. Smaller Huacas, in particular, can therefore be especially at risk. PeruMagazin lists further archaeological sites and historical facilities in its overview of regions, places, and sights in Peru.
THE HARD NUMBERS
According to current information, changes to the ground were detected over approximately 900 square meters. Individual excavations reach up to 1.5 meters deep. A skid-steer loader found on the premises was confiscated by the authorities.
The Ministry of Culture had already documented unauthorized interventions and damage in 2024. At that time, among other things, an approximately four-meter-long section of a pre-Columbian adobe wall was affected. The provisional protection regulation imposed in 2024 was extended for another two years in 2026.
NOW IT MUST BE CLARIFIED WHAT HAS BEEN LOST
The machine has been stopped and the work has been documented. But that still doesn't answer the crucial point: What was in these 900 square meters of ground beforehand?
With an ordinary plot of land, an excavated area can be filled back in. With an archaeological site, that doesn't work. Once a historical layer is destroyed and its context is lost, it cannot simply be restored.
That is exactly why the current case at Huaca Los Sauces is more than just a story about unauthorized earthworks. It concerns a site where authorities had already documented damage two years ago, which was explicitly placed under protection – and where heavy machinery has now worked the soil once again.
Ministerio de Cultura del Perú – Dirección General de Patrimonio Arqueológico Inmueble
Resolución Directoral N.° 000104-2024-DGPA-VMPCIC/MC
Resolución Directoral N.° 000193-2026-DGPA-VMPCIC/MC
Municipalidad Distrital de Pimentel – Acuerdo de Concejo N.° 080-2024
Infobae Perú, September 21, 2026
Image source: Ministerio de Cultura / DDC Lambayeque, published via Infobae Perú, September 21, 2026
