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El Junco Lagoon: the freshwater lake in the highlands of Galápagos
High in the interior of San Cristóbal Island lies one of the most surprising natural features of the archipelago: El Junco Lagoon. It is the only permanent natural freshwater lake in the Galápagos Islands.
Located inside an ancient volcanic crater, the lagoon creates a unique contrast with the dry and rocky landscapes that characterize much of the islands.
A lake inside a volcanic crater
El Junco Lagoon formed in the depression of an old volcanic crater that gradually filled with rainwater. Because it is located in the highlands of the island, the lagoon also receives moisture from the mist that frequently covers the area.
This natural process allows the lake to maintain water throughout the year.
A unique ecosystem in Galápagos
Unlike many coastal areas of the islands, the environment surrounding the lagoon has more abundant vegetation. Plants, shrubs, and grasses grow around the crater, forming a small ecosystem different from the typical arid landscapes of the archipelago.
This vegetation helps maintain the natural balance of the lake.
A refuge for birds
The lagoon is an important resting and cleaning site for several bird species. Among them are frigatebirds, which use the freshwater to wash the salt from their feathers after long flights over the ocean.
This behavior is commonly observed around the lagoon.
A remarkable volcanic landscape
From the rim of the crater, visitors can enjoy wide views of the highlands of San Cristóbal Island and the Pacific Ocean. The contrast between the lake, vegetation, and volcanic terrain creates one of the most unique landscapes in Galápagos.
Conclusion
El Junco Lagoon is a remarkable example of how nature can create unique ecosystems even within volcanic environments like the Galápagos Islands. Its freshwater and crater location make it one of the most interesting natural sites in the archipelago.