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Sehar Lagoon

Photo: Chris Hunkeler from Carlsbad, California, USA, CC BY-SA 2.0

Sehar Lagoon

Laguna Cejar is one of those places in Chile’s Atacama Desert where the landscape feels almost too strange to be real. Perched at around four thousand meters above sea level, this high-altitude lagoon is where water and salt meet, creating a mirror-like surface that reflects the endless sky and the towering volcanoes around it. It sits far from the usual tourist trails, accessible only by a winding road that cuts through rocky plateaus where sparse shrubs cling to life in the harsh climate. That remoteness is part of what makes Cejar special—here, the only sounds are the wind and the occasional cry of a flamingo searching for food in the shallows.

The water in Laguna Cejar is thick with salts and minerals, giving it a milky turquoise hue that shifts with the light. Swimming isn’t an option—the high salinity makes the water so buoyant that you’d simply float on the surface—but walking along the shore feels like stepping into another world. The surrounding salt flat stretches out in all directions, cracked and bleached white, as if the earth itself has been scoured clean. As the sun dips below the horizon, the salt takes on soft pink and violet tones, while the sky above Licancabur Volcano deepens into rich reds. The effect is mesmerizing, especially if you’re lucky enough to have the place almost to yourself.

This lagoon is part of a vast network of salt flats and high-altitude lakes scattered across the Altiplano. Formed thousands of years ago by glacial melt and underground springs, these waters filled depressions in the earth, creating mineral-rich oases in one of the driest places on the planet. Today, Laguna Cejar and its neighbors are vital habitats for flamingos, which feed on the tiny crustaceans and algae that thrive in the saline waters. The birds’ pink feathers—stained by their diet—stand out vividly against the white salt, their slow, deliberate movements adding to the surreal atmosphere. Depending on the season, you might spot Chilean, Andean, or James’s flamingos wading through the shallows, their reflections rippling in the still water.

The Atacama is the driest desert on Earth, and lagoons like Cejar are rare exceptions to its arid rule. Fed by underground water seeping through porous Andean rock, these lakes exist in a delicate balance, constantly replenished by evaporation and subsurface flows. For centuries, the lagoons were known only to local communities, remaining largely hidden from the outside world until explorers and travelers began venturing into the region in the mid-20th century. Now, Laguna Cejar is part of Los Flamencos National Reserve, a protected area dedicated to preserving the fragile ecosystems of these high-altitude wetlands.

Visiting the lagoon requires some planning. The altitude makes the air thin, and even a short walk can leave you breathless. Mornings and late afternoons are the best times to go, when the sun is less intense and the temperature more bearable. It’s wise to bring water, sunscreen, and warm layers—despite the daytime heat, the high desert can turn chilly, especially when the wind picks up. The road to Cejar winds through empty landscapes where other vehicles are rare, so it’s worth checking your car’s condition and fuel levels before setting out. Many travelers opt for guided tours, which often include stops at other nearby lagoons like Miscanti and Chaxa, offering a broader glimpse of the Altiplano’s stark beauty.

There’s a timeless quality to Laguna Cejar, a sense of being somewhere untouched by the rush of modern life. No crowds, no noise, just open space, silence, and the quiet grandeur of the natural world. The volcanoes on the horizon feel like silent sentinels, while the sky seems close enough to touch. On clear nights, the Milky Way stretches overhead in vivid detail, a reminder of why the Atacama is renowned for its pristine stargazing. For many, these moments of stillness are the real reason to come to San Pedro de Atacama—not for attractions or entertainment, but for the chance to stand in a place that feels ancient and unchanging.

This isn’t a destination for those seeking excitement or constant stimulation. Laguna Cejar rewards patience, the kind that comes from slowing down, paying attention, and listening to the quiet. In a world that moves faster every day, places like this serve as a reminder that nature doesn’t need spectacle to be extraordinary. It just needs time—and the willingness to notice.
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-23.06353, -68.21375

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