Peru Reconsiders Protection for the Mashco Piro, the World’s Largest Uncontacted Tribe

Peru is reconsidering protections for the Mashco Piro, one of the world’s largest uncontacted Indigenous groups, and Indigenous leaders are warning that the move could open more of the tribe’s Amazon rainforest home to logging. The decision has raised fears of violent encounters between the Mashco Piro and outsiders, and of diseases spreading to people who have almost no immunity to them.

The Mashco Piro live deep in the forests of south-eastern Peru. They avoid contact with the outside world to protect their traditional way of life. For years, Indigenous organisations have fought to expand the protected reserve where they live. Now, instead of expanding it, the Peruvian government has decided to go back and review the study that recommended the expansion in the first place.

This article explains who the Mashco Piro are, what the government has decided, why logging companies are involved, and what happens next.

What happened

A government commission responsible for protecting Indigenous peoples living in isolation decided last week to revisit a 2016 government study, according to Indigenous organisations and the advocacy group Survival International. That study had recommended expanding the Madre de Dios Territorial Reserve, a protected area created in 2002 for the Mashco Piro and other Indigenous peoples living in isolation.

Instead of going ahead with the expansion, the commission chose to review the study again. The move has raised concerns that logging concessions overlapping with the proposed expansion area could keep operating in land that Indigenous organisations say is essential to the Mashco Piro’s survival.

Eusebio Rios Iviche, vice president of the Indigenous organisation FENAMAD, told The Associated Press on Monday that the decision threatens to undo years of work to protect the Mashco Piro. He said it exposes them to greater risks of encounters with outsiders and of diseases to which they have little immunity.

Peru’s Ministry of Culture, which oversees protections for Indigenous peoples living in isolation, did not respond to a request for comment by the time the news was published.

Who are the Mashco Piro?

The Mashco Piro are a semi-nomadic Indigenous people who live in the Peruvian Amazon, in the Madre de Dios region near the borders with Brazil and Bolivia. They are one of the world’s largest uncontacted Indigenous groups, and campaigners describe them as the largest uncontacted tribe in the world.

They live in voluntary isolation. That means they have chosen to avoid sustained contact with the outside world. Their territory stretches across the south-eastern Peruvian Amazon and into the Brazilian state of Acre. They move through the forest, hunting, fishing and gathering food, much as their ancestors have done for generations.

Staying isolated is not a matter of preference alone. It is a matter of survival. When Indigenous peoples with no previous exposure to outside diseases meet outsiders, even common illnesses such as flu and colds can be deadly, because they have no immunity to them. Contact can also bring violence, as the Mashco Piro have discovered in recent years.

The Mashco Piro have increasingly been spotted near logging concessions in recent years, as the forest around them is cut and cleared. Their appearances near logging camps and riverside communities have become more frequent, a sign of the growing pressure on their ancestral lands.

The reserve that was never finished

The Madre de Dios Territorial Reserve was created in 2002 to protect the forest of the Mashco Piro, the Yora and the Amahuaca peoples. But from the start, Indigenous organisations said it was too small. According to FENAMAD and EarthRights International, the reserve recognised only 34 percent of the area identified as the territory of Indigenous peoples living in isolation. Large sections of Mashco Piro land were left outside the reserve — and the government later sold parts of that land as logging concessions.

FENAMAD has been raising concerns about logging in Mashco Piro territory since the 1990s. In 2005, the organisation sought emergency protection from the Inter-American Commission on Human Rights. In 2011, it brought a formal petition to the commission.

After years of pressure, the government agreed to expand the reserve. A study completed in 2016 recommended the expansion, and in 2014 the government had already begun the process of converting the Territorial Reserve into an Indigenous Reserve, a stronger form of protection that would make the territory untouchable. According to a report by the Forest Stewardship Council, the expansion would add 240,472 hectares of recognised Mashco Piro territory to the reserve — an area roughly the size of Luxembourg.

But the expansion never happened. The process dragged on for more than a decade, and the land proposed for expansion remained a “forest of permanent production”, open to logging. About 14 logging concessions overlap with the proposed expansion area.

That is why last week’s decision matters so much. Instead of finally completing a process that began in 2014, the commission has decided to revisit the 2016 study. Indigenous leaders see that as a step backwards — and possibly a step towards abandoning the expansion altogether.

The logging pressure

The pressure on the Mashco Piro’s forest comes from logging, both legal and illegal. Several logging firms hold concessions on land the Mashco Piro use. One company, Maderera Canales Tahuamanu, built more than 100 miles of roads through Mashco Piro territory in preparation for new logging, according to Survival International.

In 2024, the conflict turned violent. Images released by Survival International that year showed dozens of Mashco Piro people near logging concessions in Madre de Dios. That same year, violent encounters between the Mashco Piro and loggers left at least two loggers dead. It remains unclear whether any Mashco Piro were killed or injured.

Following the confrontations, the Forest Stewardship Council, an international organisation that certifies responsibly managed forests, suspended certification for Maderera Canales Tahuamanu. The certification was withdrawn permanently in 2025. But Survival International says logging has continued in the region despite the loss of certification.

Later in 2024, the pressure came even closer. A boat carrying officials from the Ministry of Culture and representatives of FENAMAD was ambushed by around 100 Mashco Piro while travelling to the Monte Salvado community in the Madre de Dios region. One person was seriously injured by an arrow wound. The Peru Support Group, which reported the incident, said the Mashco Piro appeared to be reacting to deforestation in their territory by illegal loggers. In August 2024, six illegal loggers had been attacked, leaving two dead and two missing.

These encounters show what is at stake. When loggers push deeper into the forest, they meet people who want to be left alone — and who will defend their home.

The court case

The dispute has now reached the highest human rights court in the Americas. In September 2026, FENAMAD and the environmental legal organisation EarthRights International brought a case before the Inter-American Court of Human Rights in Montevideo, Uruguay, accusing Peru of failing to protect the Mashco Piro’s ancestral territory and their right to remain isolated.

It is the first time the court has considered a case involving Indigenous peoples living in isolation in Peru. The two-day hearing took place on 24 and 25 September 2026.

The case has a long history. In 2022, the Inter-American Commission on Human Rights found Peru responsible for violating the rights of the Mashco Piro, Yora and Amahuaca peoples, including their rights to collective property, self-determination and judicial protection. The case was sent to the court in 2024 after the commission concluded that Peru had not complied with its recommendations.

During the hearing, FENAMAD and EarthRights presented evidence that extractive activities in the Mashco Piro’s ancestral territory are incompatible with the protection of their lives. They asked the court to order Peru to complete the reclassification of the Madre de Dios Territorial Reserve as an Indigenous Reserve, to set up protective perimeters around Mashco Piro territory, and to cancel large-scale extractive projects within it.

The parties had until 26 October to submit their final written arguments. The court will now deliberate and issue a judgment, though no date has been set for a ruling.

What each side says

Indigenous leaders and campaigners have condemned the government’s decision in strong terms.

Rios Iviche, of FENAMAD, urged the government to honour the 2016 agreement, expand the reserve and remove the overlapping logging concessions. “The lives and survival of the Mashco Piro people must not come second to economic interests,” he said.

Caroline Pearce, the executive director of Survival International, said the decision effectively put the Mashco Piro’s territory up for sale and prioritised commercial interests over Indigenous lives.

Even a former government official has questioned the move. Ramon Rivero, who headed the Peruvian government office responsible for protecting isolated Indigenous peoples in 2014, said authorities should complete the reserve’s expansion rather than revisit studies that had already been approved. He said the government should also consider compensation for logging companies whose concessions could be affected — a practical suggestion aimed at removing one obstacle to the expansion.

The Peruvian government has argued in the past that it has adopted laws, monitoring systems and other measures to protect isolated Indigenous peoples. But Indigenous organisations say those protections are not being put into practice. Julio Cusurichi, a former president of FENAMAD, told the court that the checkpoints and monitoring stations protecting isolated peoples have been maintained by FENAMAD and local communities, not by the state.

There is also a wider political backdrop. EarthRights International has warned that the current Peruvian government is seeking legislative authority to relax regulations and speed up the approval of projects in protected natural areas and Indigenous reserves. Indigenous leaders fear that such changes would further weaken the protections the Mashco Piro depend on.

Why this matters

The Mashco Piro are not the only uncontacted people in the world, but they are among the best known — and the most threatened. Their situation shows what happens when the rights of Indigenous peoples collide with the economics of the Amazon.

The forest the Mashco Piro depend on is valuable twice over. It is their home, their source of food and their way of life. It is also valuable timber, and the land around it is wanted for farming, mining and roads. Every hectare that stays protected is a hectare that cannot be logged. That is the tension at the heart of this story.

There is also a global dimension. The Amazon rainforest stores huge amounts of carbon and helps regulate the world’s climate. When it is cut down, that carbon is released, and the world gets hotter. Protecting the Mashco Piro’s forest is therefore not only a question of human rights — it is also a question of climate. This is one reason the story matters far beyond Peru.

What happens next

Several things will decide the Mashco Piro’s future in the coming months.

The commission’s review. The government commission will revisit the 2016 study. What it recommends — and whether the expansion goes ahead, is shrunk, or is abandoned — will be the most important development to watch.

The court’s judgment. The Inter-American Court of Human Rights is now deliberating on the case brought by FENAMAD and EarthRights International. A ruling in favour of the Mashco Piro could force Peru to complete the reserve’s expansion and cancel extractive projects in their territory. No date has been set for the judgment.

The logging concessions. Around 14 concessions overlap with the proposed expansion area. Whether they keep operating, are bought out, or are cancelled will determine how much of the Mashco Piro’s forest survives.

The political direction. Peru’s government is seeking powers to fast-track projects in protected areas. If those powers are granted, the pressure on Indigenous reserves across the country is likely to grow.

For now, the Mashco Piro remain in their forest, unaware of the meetings and court cases being held in their name. What happens in Lima and Montevideo in the coming months will decide whether the forest they depend on stays standing — or whether the loggers move in.

Frequently asked questions

Who are the Mashco Piro?

The Mashco Piro are an Indigenous people living in voluntary isolation in the Peruvian Amazon, in the Madre de Dios region near the borders with Brazil and Bolivia. They are one of the world’s largest uncontacted Indigenous groups.

What has Peru decided?

A government commission responsible for protecting isolated Indigenous peoples decided last week to revisit a 2016 study that recommended expanding the Madre de Dios Territorial Reserve, rather than going ahead with the expansion. Indigenous organisations say this could leave logging concessions operating in land essential to the Mashco Piro’s survival.

Why is contact dangerous for the Mashco Piro?

Because they have lived in isolation, the Mashco Piro have little immunity to diseases carried by outsiders. Even common illnesses can be deadly for them. Contact also brings the risk of violent encounters, as seen in 2024 when at least two loggers were killed in clashes.

What is the Madre de Dios Territorial Reserve?

It is a protected area created in 2002 for the Mashco Piro and other Indigenous peoples living in isolation. Indigenous organisations say it covers only 34 percent of the territory the Mashco Piro use, and a 2016 study recommended expanding it by 240,472 hectares.

What is the court case about?

FENAMAD and EarthRights International have taken Peru to the Inter-American Court of Human Rights, accusing the government of failing to protect the Mashco Piro’s ancestral territory and their right to remain isolated. The hearing took place in September 2026, and the court has not yet issued a ruling.

Which logging company is involved?

Maderera Canales Tahuamanu, a logging company operating in the area, had its Forest Stewardship Council certification suspended after the 2024 confrontations and withdrawn permanently in 2025. Campaigners say logging has continued in the region despite the loss of certification.

Conclusion

Peru’s decision to revisit the protection of the Mashco Piro’s forest is a small administrative step with very large consequences. For more than a decade, the expansion of the Madre de Dios Territorial Reserve has been promised and postponed. Now, instead of finishing it, the government is going back to review the study that recommended it.

For the Mashco Piro, the stakes could hardly be higher. Their forest is their home, their food and their protection from a world of diseases they have no defence against. Every logging road that pushes deeper into it brings outsiders closer — and brings the risk of contact that could destroy them.

The case is now before the Inter-American Court of Human Rights, and the court’s judgment may yet force Peru to protect the Mashco Piro’s territory properly. But until that judgment comes, the future of one of the world’s last uncontacted peoples hangs on a government review of a study written ten years ago.

Sources

• The Associated Press via The Week, “Peru’s move to reconsider protections for uncontacted tribe raises fears of Amazon logging”, 10 November 2026: https://www.theweek.in/wire-updates/international/2026/11/10/peru-s-move-to-reconsider-protections-for-uncontacted-tribe-raises-fears-of-amazon-logging.html
• EarthRights International, “Indigenous Leaders in Peru Call for an End of Extractive Activities in the Amazon To Safeguard the Lives of the Mashco Piro People”, 25 September 2026: https://earthrights.org/media_release/indigenous-leaders-in-peru-call-for-an-end-of-extractive-activities-in-the-amazon-to-safeguard-the-lives-of-the-mashco-piro-people/
• EarthRights International, “The Case of the Mashco Piro Indigenous People Before the Inter-American Court of Human Rights”: https://earthrights.org/case/mashco-piro-contra-el-estado-peruano-2/
• Forest Stewardship Council, “FSC’s Report on Indigenous Peoples in Voluntary Isolation and FM Certification in Peru, particularly the Mashco Piro people in the Reserva Territorial Madre de Dios”, 28 July 2025: https://fsc.org/sites/default/files/2025-07/PUBLIC_FSC%20Report%20on%20IPVI%20and%20FM%20Certification%20in%20Peru%20particularly%20the%20Mashco%20Piro%20People_July%202025_EN.pdf
• Survival International via Scoop, “Peru: Uncontacted Mashco Piro Dangerously Close To Resumed Logging Operations In Their Territory”, 26 August 2025: https://www.scoop.co.nz/stories/WO2508/S00347/peru-uncontacted-mashco-piro-dangerously-close-to-resumed-logging-operations-in-their-territory.htm

This article is for general information and education only. It is not legal or financial advice.