
Project
Photo: Andrés Ángel / AIDASupporting Cajamarca’s fight to defend its territory from mining
Cajamarca is a town in the mountains of central Colombia, often referred to as "Colombia’s pantry” due to its great agricultural production. In addition to fertile lands, fed by rivers and 161 freshwater springs, the municipality features panoramic views of gorges and cloud forests. The main economic activities of its population—agriculture and tourism—depend on the health of these natural environments.
The fertile lands of Cajamarca are also rich in minerals, for which AngloGold Ashanti has descended on the region. The international mining conglomerate seeks to develop one of the world’s largest open-pit gold mines in the area. Open-pit mining is particularly damaging to the environment as extracting the metal involves razing green areas and generating huge amounts of potentially toxic waste
The project, appropriately named La Colosa, would be the second largest of its kind in Latin America and the first open-pit gold mine in Colombia. The toxic elements that an operation of that magnitude would leave behind could contaminate the soil, air, rivers and groundwater.
In addition, storms, earthquakes, or simple design errors could easily cause the dams storing the toxic mining waste to rupture. The collapse of similar tailings dams in Peru and Brazil in recent years has caused catastrophic social and environmental consequences.
On March 26, 2017, in a popular referendum, 98 percent of the voters of Cajamarca said “No” to mining in their territory, effectively rejecting the La Colosa project. AIDA is proud to have contributed to that initiative. But even with this promising citizen-led victory, much work remains.

Related projects

The ocean needs more from us
For decades, the ocean has protected us from the impacts of climate change, absorbing 90 percent of the excess heat produced by global warming. It’s given us food and the genetic resources we use to produce life-saving drugs. As if that weren’t enough, it’s enabled millions of families to thrive in an economy based on its bounty. Despite its importance, the ocean remains unprotected in large part; no country governs the high seas, international waters that comprise 64 percent of the ocean’s total surface area. Management measures have given rise to a patchwork of uncoordinated protections. But efforts to care more for our ocean are gaining steam. Negotiations are underway for an international legally binding treaty that seeks to protect life in the high seas. I’ve been involved in the negotiations since they began. AIDA is a member of the High Seas Alliance, which is actively participating in the process; we are also the only Latin American organization represented at the meetings. Last month I participated in the third meeting of the United Nations Preparatory Committee, which is developing elements of a draft text for a treaty under the UN Convention on the Law of the Sea. During that meeting, government representatives from throughout the region actively expressed the need for a strong treaty. The next meeting, July 10-21, is expected to develop recommendations that will hopefully lead to an Intergovernmental Conference to negotiate the treaty’s content. Among other things, the treaty will support the creation and management of Marine Protected Areas, regions of the high seas that will be conserved to help protect the rich biodiversity of our oceans. Protection at a high cost In addition to absorbing a large part of the planet’s excess heat, the ocean absorbs nearly 30 percent of all greenhouse gases. But this protective role comes with serious consequences. By interacting with and absorbing pollutants such as carbon dioxide, the ocean suffers from acidification—a phenomenon that reduces levels of calcium, an element necessary for the formation of shells—and loss of oxygen, essential for life under the sea. These impacts consequently affect the food supply and employment in the fishing and tourism industries. In light of the Paris Climate Agreement, and of the negotiation of this new treaty for the high seas, governments around the world can and must do more to protect marine ecosystems from the impacts of climate change. Marine Protected Areas The International Union for the Conservation of Nature has called on governments to protect 30 percent of the ocean through such conservation measures as the establishment of Marine Protected Areas. Two years ago, one of the smallest countries on the planet, Palau, took a big step toward realizing this goal. Recognizing the benefits of a fully protected marine reserve, the North Pacific island nation designated 80 percent of its marine territory (an area the size of Spain) as a reserve in which trawling, mining, and other harmful extractive activities are forbidden. Palau’s decision protects the nearly 1,300 marine species and 700 varieties of coral that call this small corner of the world home. In Latin America, countries such as Chile, Ecuador, and Costa Rica have followed Palau’s example by safeguarding waters within their national territories. While their intentions are noble, they should also include the high seas. Building on the momentum of marine conservation around the world, the high seas treaty must be developed, and our oceans better protected. In the ten-plus years I’ve worked as an environmental attorney, I have learned a valuable lesson: all of the life that surrounds us comes from the ocean. It’s time to care for it as well as it cares for us.
Read more
Victory in Colombia: Citizens Vote to Ban Mining in their Territory
On March 26, 2017, 98% of voters in Cajamarca, Colombia decisively rejected mining in their territory. The results of the referendum (or “popular consultation”) are binding under Colombian law. Now municipal authorities must issue regulations to implement the ban. AIDA was part of the legal team that advised the Cajamarca community and developed a strategy, including the referendum, to stop a proposed mine that threatens to pollute the water supply. AngloGold Ashanti was in the exploration phase of a project called La Colosa (the Collosus)—aptly named, because it would be among the world’s 10 largest open-pit gold mines, the second-largest in Latin America. In a country coming out of a 50-year civil war, the referendum is a victory not only for the environment, but also for democracy. Banning mining through popular consultation demonstrates a commitment to solving environmental conflicts in a peaceful and participatory manner. It also allows citizens to exercise their human right to have a voice in public issues that affect them—a key element of true democracy—and to safeguard their human right to a healthy environment.
Read more
Victory in Colombia: Citizens Vote to Ban Mining in their Territory
On March 26, 2017, 98% of voters in Cajamarca, Colombia decisively rejected mining in their territory. The results of the referendum (or “popular consultation”) are binding under Colombian law. Now municipal authorities must issue regulations to implement the ban. AIDA was part of the legal team that advised the Cajamarca community and developed a strategy, including the referendum, to stop a proposed mine that threatens to pollute the water supply. AngloGold Ashanti was in the exploration phase of a project called La Colosa (the Collosus)—aptly named, because it would be among the world’s 10 largest open-pit gold mines, the second-largest in Latin America. In a country coming out of a 50-year civil war, the referendum is a victory not only for the environment, but also for democracy. Banning mining through popular consultation demonstrates a commitment to solving environmental conflicts in a peaceful and participatory manner. It also allows citizens to exercise their human right to have a voice in public issues that affect them—a key element of true democracy—and to safeguard their human right to a healthy environment.
Read more