The Sierra Nevada de Santa Marta in northern Colombia is the highest coastal mountain range on Earth. Just 25 miles from the Caribbean Sea, its snowcapped peaks rise dramatically from the coastline, creating a uniquely stunning landscape that holds profound spiritual and cultural meaning for the Indigenous Peoples of the region.

For the Kogui, Arhuaco, Wiwa, and Kankuamo Peoples, this mountain range is known as “The Heart of the World.” According to their ancestral worldview, the health of the Sierra—both ecological and spiritual—directly affects the balance of life across the planet.

Since 2012, the Amazon Conservation Team (ACT) has worked in partnership with these communities to help maintain that balance. Together, we’ve established Indigenous nature reserves, acquired private lands to safeguard sacred sites, restored biodiversity, and supported the development of culturally significant infrastructure—all as part of our broader commitment to biocultural conservation.

“The Sierra is our casa grande (big house) that protects us. It is where we rest, where we think, where we dream… It is an energetic place that gives life not only to the peoples of the Sierra, but to everything that exists on the planet,” explains Jacinto Zarabata, a spiritual authority of the Kogui people.

La Línea Negra

The Sierra is defined by the Línea Negra (“Black Line”), a ring of 348 sacred sites that marks the ancestral boundary of the territory. At glacial lakes high in the mountains and coastal mangroves along the Caribbean, Mamos—traditional spiritual authorities—lead ceremonies that sustain harmony and teach interconnectedness. Each site is seen as part of a living network, each with a lesson to impart.

Along the coast, the sacred forests and wetlands collectively known as Jaba Tañiwashkaka are believed to be the origin of much of the planet’s flora, fauna, and waters, according to the Kogui. For more than a decade, ACT has worked with the Kogui to support their return to this ancestral territory, reestablishing it as a center for intercultural exchange, training, and Indigenous leadership.

Mapping and Protecting Sacred Sites

From Jaba Tañiwashkaka, ACT has helped train over 50 Indigenous youth in digital mapping and geolocation techniques to support community-led projects. These efforts have resulted in the documentation of more than 650 sacred sites, 700 farms, and over 2,000 environmental observations monitoring threats to water sources, wildlife, and native plants.

In a major collaborative effort, the four Indigenous communities of the Sierra mapped 328 sacred sites along the Línea Negra. This work was instrumental in the Colombian government’s issuance of Decree 1500, legally recognizing the cultural and spiritual significance of these sites. In 2021, the mapped sites were officially added to Colombia’s national geographic database.

Yet even with this historic recognition, threats to the region continue to grow. Mapping conducted by ACT and Indigenous partners shows that 34 percent of sacred sites face risks from activities like mining, monoculture, and unregulated tourism.

“Nowadays you don’t see the sacred sites as they used to be. Some have been destroyed, they no longer exist… and many of us have lost our territory,” shared Mama Salé Zarabata, a Kogui spiritual authority.

Preserving Culture and Ecosystems

The Sierra’s cultural importance is inseparable from its ecological value. Like the Amazon, it is a cradle of biodiversity—home to species found nowhere else on Earth, from the endangered Black-backed Thornbill hummingbird to brightly colored harlequin toads. Conservationists recognize the Sierra as one of the world’s most irreplaceable ecosystems.

It also sustains human life: 36 rivers originate here, providing water to more than 1.5 million people. At ACT, we believe that protecting this land in partnership with its traditional guardians is essential to safeguarding its benefits for all.

In 2025, ACT is collaborating with Indigenous organizations and the Geographic Institute Agustín Codazzi (IGAC) to record the oral histories of 38 priority sacred sites along the Línea Negra. These stories—told by elders and accompanied by mapped data—will be shared through platforms such as Terrastories and Expediciones IGAC. While the full versions will be used in Indigenous educational spaces, a filtered selection will be made publicly available to raise awareness and build broader respect for the Sierra’s enduring wisdom and vitality.