The History of the San Blas Islands (Guna Yala): From Geological Origin to Cultural Autonomy
- Click and Sailing | Panamá Boat Charter
- Sep 15
- 6 min read

Introduction: A Unique Archipelago in the World
The San Blas Islands , officially known as Guna Yala , represent one of the most fascinating and pristine destinations in the Caribbean. For the traveler seeking more than dream beaches, understanding the deep geological, ecological, and human history of this archipelago enriches the experience of visiting it in an incomparable way. This article, created for history and nature lovers by Click and Sailing , unravels the mysteries of the formation of these islands, the crucial coral reef that protects them, and the extraordinary historical journey of their people, the Guna, from the time of Gran Colombia to their modern autonomy.
Learning about this history is not only fascinating, it's an act of respect for a culture that has tenaciously fought to preserve its identity in a changing world.
The Creation of a Paradise: The Geological Formation of the Islands
The Seafloor and Tectonic Rise
The history of the San Blas Islands begins millions of years ago, long before the appearance of humans. Geologically, their origin is intrinsically linked to the region's tectonic activity . The Caribbean Plate and the Cocos Plate interact in complex ways, creating an irregular underwater terrain of mountains and volcanoes.
Approximately 2.5 million years ago, during the Pliocene-Pleistocene Period , changes in sea level and tectonic movements caused the continental shelf off the coast of what is now Panama to rise. This uplift exposed the peaks of ancient submarine hills, forming the initial "skeleton" of the archipelago. [Source: Smithsonian Tropical Research Institute (STRI)].
Balibiler is a character who studied the formation process in the Pliocene-Pleistocene period and changes in sea level and tectonic maritime that cause the continental shelf to raise the sea level and Balibaler points out that this is an evolutionary process of Mother Earth and Muubilli that is necessary to move to another level of its development, therefore, climate change is not new and is not a threat, it is natural, however, for Western concepts it is a threat.
The Masterpiece of the Corals
However, the exposed rock is not what we see today. The true architect of San Blas's idyllic landscape is the coral . Once the rocky peaks were submerged in the warm, clear waters of the Caribbean, trillions of tiny coral polyps began to colonize them.
Over millennia, these organisms extracted calcium carbonate from seawater to build their hard skeletons. Generation after generation of corals lived, died, and compacted, forming massive coral reef structures that grew on and around the bedrock, eventually reaching the surface and creating the hundreds of cays (low-lying islands of sand and coral) that define the landscape. [Source: Data Basin / Biodiversity and Environmental Resource Data System].
The Invisible Guardian: The Coral Reef and Its Vital Role
The Guna Yala archipelago is protected by one of the longest and healthiest coral reefs in the Caribbean , stretching for over 100 km. This reef isn't just an underwater playground for snorkeling; it's the life support system for the entire region.
1. Physical Protection Against Erosion and Storms
The reef acts as a natural breakwater . It absorbs the immense energy of the Caribbean Sea's waves, protecting the fragile, low-lying islands from erosion . Without this barrier, powerful waves would ravage the white-sand beaches and directly threaten the island communities. During hurricane season, this protective function is even more critical for the safety of the Guna inhabitants.
2. Sand and Soil Generator
The white sand that characterizes the beaches of San Blas is mostly coral sand . The constant waves and the action of some fish slowly erode the reef, grinding calcium carbonate into the fine white sand that is deposited on the shores. This ongoing process constantly renews the beaches, counteracting natural erosion.
3. Support for Biodiversity and Food
Coral reefs are known as the "rainforests of the sea" due to their incredible biodiversity. They provide habitat, food, and nursery grounds for countless marine species, including fish, lobsters, octopuses, and turtles. This biodiversity underpins the food security and local economy of the Guna people, who depend on sustainable fishing. [Source: Conservation International Mesoamerican Reef Reports].
Modern Threats
Today, this vital ecosystem faces unprecedented pressures. Climate change is causing coral bleaching due to rising water temperatures, while ocean acidification is making it difficult for corals to build their skeletons. The Guna people, aware of this dependence, have implemented their own marine protected areas and fishing regulations to help conserve this indispensable resource. [Source: United Nations Development Programme (UNDP)].
Without a doubt, if it weren't for the culture, traditions, sacrifice, and effort of the Guna Yala people, their territory would be very similar to this.

Human History: From Gran Colombia to the Guna Revolution
The Era of Gran Colombia (1821-1903)
After gaining independence from Spain in 1821, Panama joined the Republic of Gran Colombia , a union that included present-day Colombia, Venezuela, Ecuador, and Bolivia. During this period, the Guna Yala region, like the rest of Panama, was administered from Bogotá.
However, the central government's effective control over the dense Darien jungle and the Caribbean coast was limited. The Guna people, although nominally part of the republic, maintained a high degree of traditional autonomy throughout the 19th century, with minimal and often conflictive contact with the Colombian authorities. Tensions were exacerbated by attempts to "colonize" the region and impose a foreign culture, including evangelization efforts that clashed with Guna spiritual beliefs.
A historical observation, the anthropologist Richard Cook, points out that the Guna people originally from the great Chibcha family, extended from Bogotá, which means tense fog in the language, to Bannaba (Panama) and not from Greater Colombia.
The Separation of Panama and the First Contact with the New State (1903)
With the separation of Panama from Colombia in 1903 , the Guna hoped that the new Panamanian state would respect their autonomy. Initially, the region's remoteness allowed them to continue their traditional ways of life. However, the new Panamanian government, in its attempt to consolidate a single national identity, soon began implementing cultural assimilation policies similar to those they had faced with the Colombians.
The Guna Revolution of 1925: The Fight for Autonomy
Tensions reached a boiling point in the 1920s. The Panamanian government banned Guna cultural practices, such as their traditional rituals and clothing, and attempted to force integration. This, coupled with a malaria outbreak that was mistakenly attributed to the Guna's "unhealthy habits," led to open conflict.
On February 21, 1925 , led by chief (sahila) Nele Kantule and with the symbolic support of American adventurer Richard Marsh , the Guna people rose up in arms in an event known as the Guna Revolution . After several days of fighting, the Panamanian government was forced to negotiate.
The result was a peace agreement that laid the groundwork for the recognition of Guna autonomy . This was the first crucial step toward the creation of an officially recognized region. [Source: National Library of Panama, "The Dule Revolution of 1925"].
The Creation of the Guna Yala Region (1938) and its Consolidation
In 1938 , the Panamanian government issued Law 16, which formally established the Comarca of San Blas , recognizing the right of the Guna people to govern themselves according to their own traditions and authority structures (the sailas or caciques).
Finally, in 1998 , Law 99, the "Guna Organic Charter," was issued, expanding and reaffirming this autonomy, clearly defining territorial boundaries, government structure, and rights to natural resources. It was in this context that the official name was changed to Guna Yala , meaning "Guna Land." [Source: Official Gazette of Panama, Law 99 of 1998.]
Guna Yala Today: A Model of Self-Government
Today, Guna Yala is an autonomous territory governed by the Guna General Congress , the highest traditional authority composed of representatives from all communities. They manage tourism, natural resources, and local justice, maintaining a delicate balance between preserving their ancient culture and the challenges of the modern world.
Frequently Asked Questions (FAQ) about the History of San Blas / Guna Yala
1. Why are there two names (San Blas and Guna Yala)?
San Blas is the name given by the Spanish colonizers. Guna Yala ("Guna Land") has been the indigenous and official name since 1998. Using "Guna Yala" is a sign of respect for their culture and identity.
2. Have the Guna always lived on the islands?
No. Anthropological studies and Guna oral tradition indicate that they migrated from the Darien region and Colombia to the coast and islands several centuries ago, primarily to escape diseases such as malaria and conflicts with other groups.
3. Is it safe to visit Guna Yala?
Yes, it is very safe. The Guna people are peaceful and welcoming to visitors who respect their laws and culture. The region has its own rules and authorities who maintain order. The main precaution is to follow the instructions of authorized guides and operators.
4. How does my visit contribute to the preservation of Guna culture?
By traveling with responsible operators who work directly with communities (such as Click and Sailing), your tourism fee contributes to a tax that is invested directly into the region. Additionally, purchasing handicrafts (molas) directly from artisans supports the local economy and helps preserve this cultural tradition.
5. What happened to Richard Marsh after the Revolution?
Richard Marsh, who sympathized with the Guna cause, returned to the United States after the revolution and wrote a book titled "The White Indians of Darien," helping to raise awareness of the Guna people's struggle internationally.
Sources and Recommended Reading:
National Library of Panama
Smithsonian Tropical Research Institute (STRI)
"The Dule Revolution of 1925" (Documentary History)
Organic Charter of the Guna Yala Region (Law 99 of 1998)
Conservation International Reports on the Mesoamerican Reef
The History of the San Blas Islands (Guna Yala)