Project
Alberto Peña Kay
Protecting the Santurban páramo from mining's damage
In the Andean region, high-mountain ecosystems known as páramos capture water from the fog and supply it to the lowlands. One such ecosystem is the Santurbán páramo, which provides fresh water to more than two million people in Colombia.
Santurbán, like the other páramos on the continent, also captures large amounts of carbon, making it a key ally in mitigating the climate crisis. It is also a refuge for hundreds of endangered species, including the iconic spectacled bear.
The land in and around the páramo contains gold and other minerals. This has put Santurbán in the spotlight of the multinational mining industry, which for decades has sought to establish large-scale projects in the ecosystem that threaten to degrade it.
The Committee for the Defense of Water and the Santurbán Páramo—a coalition of environmental advocates—has thwarted these ongoing attempts, with support from AIDA and other civil society organizations.
Background
The Santurbán páramo is located in the heart of the Eastern Cordillera of the Colombian Andes, in the departments of Santander and Norte de Santander, at an elevation ranging from 2,200 to 4,290 meters above sea level.
It covers an area of 129,743 hectares and is home to 57 lakes. It serves as a habitat for 457 plant species and 293 species of vertebrate fauna.
There are mineral deposits in Santurbán, primarily gold, but also silver and copper. This explains the region’s mining tradition, particularly in the part of the páramo located in Santander, in the province of Soto Norte. The communities in the area have built their culture and identity around gold mining, which is mainly artisanal and small-scale.
But since the 1990s, the gold deposits in the páramo have also attracted foreign mining conglomerates seeking to develop large-scale projects. This has raised concerns among the population that relies on the Santurbán water sources, who have mobilized in defense of water, their land, and life.
Although national and international regulations prohibit mining in páramos, the Colombian government has granted mining concessions to transnational corporations in Santurbán.
Photo: Keishpixl / Pixabay.
The long struggle to protect the páramo
One of the companies that sought to develop large-scale mining in Santurbán is Eco Oro Minerals Corp.—formerly Greystar Resources—a Canadian company that intended to establish the Angostura open-pit mine there to extract gold and silver. Between 1994 and 1995, the company acquired its mining titles and conducted exploration. And in 2010, it applied for a mining permit.
That was the year AIDA became involved in defending the ecosystem, supporting the Committee for the Defense of Water and the Santurbán Páramo. Our legal work helped convince the Colombian government to deny the mine an environmental permit in May 2011.
In January 2013, the government designated a portion of the páramo (11,700 hectares) as a Regional Natural Park. That year—together with the committee and partner organizations—we carried out a campaign and advocacy efforts to urge the government to recognize the entire Santurbán area as a páramo ecosystem through a delimitation based on scientific criteria. In December 2014, the Ministry of the Environment established a delimitation that protected 76% of the páramo (98,954 hectares).
Furthermore, as a result of a litigation supported by AIDA, in February 2016, Colombia’s highest court reaffirmed that mining in páramos is prohibited.
That same year, in December, the International Finance Corporation (IFC), the World Bank Group’s private sector arm, decided to divest from Eco Oro Minerals. This achievement was the result of a process that began in 2012, when the committee—advised and supported by AIDA and international partner organizations—filed a complaint before an independent accountability mechanism, which concluded that the IFC’s investment in the Angostura project failed to take into account the project’s social and environmental impacts, thereby contradicting the financial institution’s internal policies.
Also in 2016, Eco Oro Minerals filed an arbitration claim against the Colombian government with the International Centre for Settlement of Investment Disputes (ICSID), arguing that it had been adversely affected by government decisions aimed at protecting the country’s páramos, including the delimitation of Santurbán.
In 2017, the Constitutional Court invalidated the delimitation because the affected communities were not consulted. The high court ordered that a participatory delimitation be carried out.
And that year, a new threat to Santurbán emerged when the Canadian multinational Aris Mining applied for an environmental permit for Soto Norte, a gold mining project located near the páramo. Following citizen protests and technical objections, in October 2020, the National Environmental Licensing Authority shelved the project.
Photo: Aztlec.
Current situation
In March 2025, the Colombian government designated the western flank of the Santurbán massif as a temporary renewable natural resource reserve area, delimiting and protecting an area of 75,344.65 hectares. This resulted in a two-year suspension of the Soto Norte project. However, Aris Mining's contract to formalize Calimineros' small-scale mining activities through the purchase and processing of mineralized material remains in effect.
In addition, the Canadian mining company continues to move the project forward. In September 2025, it released its prefeasibility study, revising the mine’s original design.
Meanwhile, members of the Committee for the Defense of Water and the Santurbán Páramo face threats and stigmatization because of their work. In March 2025, UN Special Rapporteurs and the Working Group on Business and Human Rights denounced these incidents in communications sent to the governments of Colombia, Canada, and the United Arab Emirates, as well as to the companies Aris Mining and MDC Industry Holding Company LLC, the former co-owner of the Soto Norte project.
Regarding the arbitration claim filed by Eco Oro Minerals, in July 2024, ICSID ruled in favor of the Colombian government and rejected the Canadian company’s claim for USD 1.1 billion in compensation.
Concerning the delimitation of Santurbán, in July 2026, the Ministry of the Environment issued a resolution introducing the concept of "progressive delimitation." On that basis, the government proposes to progressively demarcate the páramo, covering 29,199 hectares across 19 municipalities—those where the participatory agreements required by the Constitutional Court in its 2017 ruling have already been finalized. It also proposes two measures on the creation and expansion of reserves to restrict mining in the ecosystem.
Learn more about the impacts of mining on the páramos of Latin America (in Spanish).
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Wetlands: Vital and At Risk
Temporarily or permanently flooded extensions of land create wetlands— oxygen-deprived, hybrid ecosystems that combine the characteristics of both aquatic and terrestrial systems. Wetlands include marshes, páramos, bogs, peatlands, swamps, mangroves and coral reefs. Wetlands provide people with a host of benefits: Wetlands are natural supermarkets that contain an incredible amount of biodiversity: they are home to more than 100,000 known freshwater species. Our allies in the fight against climate change, wetlands capture and store carbon from the atmosphere. It is estimated that over long periods of time, a hectare of mangroves captures 50 times more carbon dioxide than a tropical forest. Wetlands help to reduce the risk of natural disasters . An example of this happened in 2011, when the Veracruz Reef System in the Gulf of Mexico protected the city of Veracruz from the category four Hurricane Karl. Wetlands are a source of livelihood and employment for millions of people. In Panama alone, 90 percent of incomefrom fishing comes from catching species that, at some stage in their life, depend on the wetlands of the Panama Bay. What’s more, water to irrigate the country’s 570 million agricultural crops comes from these ecosystems. By forming beautiful landscapes, wetlands are a center of recreational and tourist activities, such as bird watching. Under threat Even though they are one of the most productive ecosystems in the world, more than 64% of the world’s wetlands have disappeared. The causes of their degradation include: Activities like agriculture that promote changes in land use , and contribute to the loss of coverage of wetlands. An example is the Ciénaga Grande de Santa Marta in Colombia, which is at risk from agricultural practices that have affected its water supply. Poorly planned urban development like that which threatened Panama Bay, where the mangroves were filled in and cut down to construct roads and houses. Obstruction of the water flow that feeds wetlands, as in the construction of the Las Cruces hydroelectric project in Mexico on the San Pedro Mezquital river, on which Marismas Nacionales, one of the most important mangrove forests in the country, depends. Contamination of subterranean water sources by activities like mining. What can we do for them? At AIDA we work to protect wetlands in the Americas . We’ve advocated for the preservation of the Colombian páramosand the Mexican wetlands, such as Cabo Pulmo, Marismas Nacionales and the Veracruz Reef System. We’ve also created rigorous reports about the international legal obligations that Costa Rica must meet to protect its corals, and about the standards of protection of corals in Mexico. And we’re ready to do more! We are currently preparing for the 12th Conference of Parties (COP12) for the Ramsar Convention , an intergovernmental treaty that has since 1971 promoted the protection of wetlands and established principles for their conservation and sustainable use through national action and international cooperation. The countries that sign and ratify the Convention are home to wetlands on the Ramsar List. They commit to taking steps necessary to maintain the ecological characteristics of these sites , which hold such significant value for their country and for all of humanity. The Conference will put to the test the promises that Latin American countries have made to protect their wetlands. The Parties will release Strategic Plan 2016-2021 , which will lay the foundation for the conservation of these ecosystems in the region. We’ll be at the Conference alongside partner organizations and decision markers to advocate for the best possible preservation of these beacons of health and biodiversity for the region.
Read morePáramos: Defending Water in Colombia
Colombia’s páramos occupy just 1.7 percent of the national territory, yet they produce 85 percent of its drinking water. These rich sources of life are threatened by activities like large-scale mining, and their protection should be a point of national interest. So just how does the magic happen? The páramos are high altitude wetlands. Despite being located in the equatorial zone, they remain cool throughout the year, which enables their soils to maintain rich volcanic nutrients. All these characteristics make the páramos true sponges that capture moisture from the atmosphere, purify water and regulate its flow. The growth of the economy, the production of electricity and life itself are all made possible by the water provided by Colombia’s páramos: Bogota’s water comes from the páramos of Sumpaz, Chingaza (at risk) and Cruz Verde (at risk from mining exploration). The water in Medellin arrives from the páramo of Belmira. The Santurbán páramo (at risk from gold mining projects) supplies water to Bucaramanga. In Cali, the Farallones are vital springs of water. Life in all these cities depends on the páramos. That’s why AIDA is committed to the protection of these valuable ecosystems. It’s about defending our sources of fresh water, our right to live. This fight recently called us to: Call the World Bank’s attention to the risks of its investment in the Angostura mine, in the Santurbán páramo, which would harm both people and the environment. Co-organize a seminar about páramos and mining at the Universidad Sergio Arboleda in order to discuss and understand the latest legal and technical regulations on the subject. We Are Not Alone Social movements in defense of water, life and páramos have blossomed across the country. The Committee for the Defense of Water and the Santurbán Páramo and the Committee for Cruz Verde are two strong examples. Greenpeace Colombia has also promoted the end of mining in the Pisba páramo in Boyacá. Meanwhile, after many extensions, the Environmental Minister announced last December the delimitation of the Santurbán páramo. However, he also announced that mining projects that already had a title and an environmental license would be permitted to continue. The Canadian mining company Eco Oro then issued a public statement that, even with the delimitation of Santurbán, it would continue developing the Angostura mine on a smaller scale. This delimitation opens the way for similar actions on which the recognition and protection of other Colombian páramos will depend. As members of civil society we must remain vigilant so that such actions comply with national and international environmental and human rights standards. Our water, and therefore our life, is at risk. Where will our fresh water come from in 2015, when our numbers are millions more? If we don’t protect our páramos today, Colombia’s future generations will be deprived of access to water. Current problems in Lima, Peru and São Paulo, Brazil remind us that this reality might not be too far away.
Read morePáramos: Defending Water in Colombia
Colombia’s páramos occupy just 1.7 percent of the national territory, yet they produce 85 percent of its drinking water. These rich sources of life are threatened by activities like large-scale mining, and their protection should be a point of national interest. So just how does the magic happen? The páramos are high altitude wetlands. Despite being located in the equatorial zone, they remain cool throughout the year, which enables their soils to maintain rich volcanic nutrients. All these characteristics make the páramos true sponges that capture moisture from the atmosphere, purify water and regulate its flow. The growth of the economy, the production of electricity and life itself are all made possible by the water provided by Colombia’s páramos: Bogota’s water comes from the páramos of Sumpaz, Chingaza (at risk) and Cruz Verde (at risk from mining exploration). The water in Medellin arrives from the páramo of Belmira. The Santurbán páramo (at risk from gold mining projects) supplies water to Bucaramanga. In Cali, the Farallones are vital springs of water. Life in all these cities depends on the páramos. That’s why AIDA is committed to the protection of these valuable ecosystems. It’s about defending our sources of fresh water, our right to live. This fight recently called us to: Call the World Bank’s attention to the risks of its investment in the Angostura mine, in the Santurbán páramo, which would harm both people and the environment. Co-organize a seminar about páramos and mining at the Universidad Sergio Arboleda in order to discuss and understand the latest legal and technical regulations on the subject. We Are Not Alone Social movements in defense of water, life and páramos have blossomed across the country. The Committee for the Defense of Water and the Santurbán Páramo and the Committee for Cruz Verde are two strong examples. Greenpeace Colombia has also promoted the end of mining in the Pisba páramo in Boyacá. Meanwhile, after many extensions, the Environmental Minister announced last December the delimitation of the Santurbán páramo. However, he also announced that mining projects that already had a title and an environmental license would be permitted to continue. The Canadian mining company Eco Oro then issued a public statement that, even with the delimitation of Santurbán, it would continue developing the Angostura mine on a smaller scale. This delimitation opens the way for similar actions on which the recognition and protection of other Colombian páramos will depend. As members of civil society we must remain vigilant so that such actions comply with national and international environmental and human rights standards. Our water, and therefore our life, is at risk. Where will our fresh water come from in 2015, when our numbers are millions more? If we don’t protect our páramos today, Colombia’s future generations will be deprived of access to water. Current problems in Lima, Peru and São Paulo, Brazil remind us that this reality might not be too far away.
Read more