The only permanent freshwater lake in the entire Galapagos archipelago, located in a volcanic crater at an altitude of approximately 700 m in the San Cristobal mountain range.
Formed by the collapse of a volcanic cone thousands of years ago, the lake reaches 4–6 meters deep, with a diameter of ~270–300 m.
The name comes from an endemic reed plant (Cyperus anderssonii) that grows on its edge..
It was crucial during World War II as a source of water for the US military base in Baltra.
Ideal for taking a ~2km walk through its green surroundings, and observing birds such as frigate birds, pintail ducks, gallinules, St. Kitts’ mockingbirds and Darwin’s finches.
Activity |
What Gislandstours offers you |
|---|---|
| El Junco Interpretive Walk: | Guided trail along the edge of the lake via a volcanic crater, interpreting flora and evolution |
| Birdwatching and Nature Observation: | Identify frigate birds, pintail ducks, gallinules, mockingbirds, and finches in their native environment. |
| Optional complementary visit: | Explore “La Galapaguera” (giant tortoise center) or relax in Puerto Chino |
100%
It is the largest freshwater spring in the archipelago and has never dried up in recent memory.It is the largest freshwater spring in the archipelago and has never dried up in recent memory.
The lake can overflow during El Niño events, even forming temporary currents.
The area is home to the last population of the critically endangered Galapagos miconia.
Frigate birds use this lake for bathing and grooming, a rare experience in marine environments.
It offers panoramic views over the island, including Cerro San Joaquín and, on clear days, Punta Pitt
Frigate birds preening on the lake
Pintail, Common Moorhen, Egretta cacarella
Endemic mockingbird
Darwin’s finches, flycatchers and other highland birds
Occasionally, bats, lizards and species of high Andean ferns
La emblemática tortuga gigante de Galápagos
El pinzón que inspiró la teoría de la evolución
Pelícanos: expertos pescadores en acción
Lobos marinos, siempre presentes en tu visita a Galápagos
Las coloridas iguanas terrestres de las islas volcánicas
La única iguana del mundo que nada en el mar
La fragata y su corazón inflado de amor
¿What does a tour with Gislandstours include?
All our tours include a certified local guide, ground and/or sea transportation, snorkeling equipment (when applicable), a picnic lunch or lunch at a local restaurant, and entrance fees when necessary. Always in small groups.
¿What should I bring on a full-day tour?
¿Are the tours suitable for all ages?
Yes, most of our tours are suitable for children, seniors, and people with moderate mobility. If you have any specific needs, please let us know and we can customize the experience for you.
¿In what language are the tours given?
Our guides are trained to offer tours in Spanish and English. If you require another language, we can help you with customized options.
¿What is the best time to visit the Galapagos?
The Galapagos can be visited year-round. January through May offers warmer weather and calmer seas; June through December offers cooler temperatures and more marine life. Each season has its own unique charm.
¿How far in advance should I book?
We recommend booking at least two weeks in advance, especially during peak season (June-August and December-January), although we also assist with last-minute reservations subject to availability.
¿How to deal with motion sickness?
Here are some tips to deal with motion sickness:
¿What happens if there is bad weather?
Safety is our priority. If weather prevents the tour from taking place, we will offer alternative options or reschedule based on your dates.
¿Do you have any other questions?
Write to us via WhatsApp or email, and we’ll be happy to help you plan your experience in the Galapagos.
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