Chungará Lake: A 4,517-Meter Andean Marvel

Chungará Lake sits at 4,517 meters (14,820 feet) above sea level in northern Chile's Lauca National Park, making it one of the highest large lakes on Earth. Its surface covers roughly 21.5 square kilometers, and the water mirrors the twin cones of Parinacota and Pomerape volcanoes with a symmetry that photographs can't quite capture. The lake formed between 17,000 and 8,000 years ago when a colossal collapse of the Parinacota volcano sent about 6 cubic kilometers of debris downhill, damming the valley and pooling the Río Chungará behind it. That violent origin explains the lake's irregular shape and its unusual depth profile — a maximum of 26 to 40 meters, depending on which survey you trust, concentrated in the northwestern sector.

Unlike the saline flats that dot the Altiplano, Chungará is a freshwater body fed mainly by the Chungará River, which contributes about four-fifths of its inflow from the southeast. Smaller creeks — Sopocalane, Ajata, Mal Paso, and Chachapay — seep in from the western and northern edges, some forming deltas that now lie submerged. The lake loses most of its water to evaporation rather than outflow, a balance that keeps levels fairly stable year-round but leaves the shoreline slightly crusty in places.

What Makes Chungará Lake Worth the Altitude

The first thing that hits you is the color. At this elevation, with the thin, dry air of the Altiplano, the water reads as a deep, almost metallic blue — a hue that shifts to turquoise near the shallows where the Río Chungará delta spreads out. The second thing is the silence. There's a wind, almost always, but it carries no human noise beyond the occasional tour van door slamming.

The Parinacota and Pomerape Backdrop

The twin volcanoes — Parinacota at 6,342 meters and Pomerape at 6,222 meters — stand on the Chile-Bolivia border and dominate every westward view from the lake's eastern shore. They're stratovolcanoes, symmetrical enough to look almost artificial, and their snowcaps persist even in the dry season. Photographers tend to cluster at the main mirador near the CONAF ranger station, but a short walk south along the shore gives you a cleaner angle: the volcanoes frame the lake without the guardrail in the foreground. I'd skip the crowded viewpoint at midday and aim for early morning, when the wind hasn't yet picked up and the reflection holds.

Wildlife on the Shoreline

The lake and its surrounding bofedales (high-altitude wetlands) support over 130 native species, including three types of flamingos, the giant coot (tagua gigante), and Andean geese. Vicuñas graze the grassy patches near the water's edge, often in groups of five or six, and they're remarkably tolerant of careful observers. Bring binoculars — the flamingos often feed in the shallower southeastern corner, where the river delta creates a patchwork of pools. Andean condors occasionally ride thermals above the volcanic slopes, though you'll need luck and a good pair of eyes to spot one.

Planning Your Visit to Lauca National Park

Lauca National Park covers 1,379 square kilometers of Andean plateau, and Chungará Lake is its centerpiece. The park was created in 1970 and designated a UNESCO Biosphere Reserve in 1981. Entry is free, but you must register your visit with CONAF — either at the ranger station on site or in advance through the Pases Parques system. The park is open Tuesday to Sunday; the only vehicle access is the Arica–La Paz international highway (Route 11-CH).

Getting There from Arica

The nearest airport is Chacalluta International (ARI) in Arica, with direct flights from Santiago. From Arica, drive 160 kilometers (about three hours) along Route 11-CH, climbing from sea level to over 4,500 meters. The road is paved the entire way, and you'll pass through the Lluta Valley, the Cardones Ravine with its towering cactus stands, and the village of Poconchile, whose 17th-century church is worth a 15-minute stop. If you're driving yourself, fill up in Arica — there are no gas stations after you leave the city.

Acclimatization and Altitude

The jump from Arica (sea level) to the lake (4,517 meters) in a single day is aggressive. Most tour operators run day trips from Arica, but I'd strongly suggest spending a night in Putre (3,500 meters) first. Putre is only 12 kilometers from the park boundary and has a handful of guesthouses and restaurants. Even one night there reduces the odds of headache, nausea, and breathlessness at the lake. If you're on a tight schedule and going straight up, keep your movements slow, drink more water than you think you need, and skip the coca tea — it's a mild stimulant that can mask symptoms rather than relieve them.

Best Time to Visit

The dry season runs from May through September, with July through September offering the clearest skies and lowest humidity. Daytime temperatures hover around 10–15°C (50–59°F), but nights drop below freezing, and the wind chill at the lake can make it feel much colder. The wet season (December–March) brings afternoon cloud cover and occasional snow, which can close Route 11-CH temporarily. November and December have the longest daylight hours — over 13 hours — which helps if you're moving slowly due to altitude. Whenever you go, pack layers, a windproof jacket, sunscreen (the UV at this elevation is brutal), and sunglasses.

The Chungará Trail and Other Short Walks

A 1-kilometer interpretive trail starts near the CONAF ranger station on the lake's eastern shore. It's flat, takes about 30 minutes at a slow pace, and includes a wheelchair-accessible mirador. The path is signed with information about local flora and the lake's geology. For a slightly longer walk, the Las Cuevas trail (1.2 kilometers round-trip, 30–45 minutes) starts at 4,350 meters and passes rock formations and small caves. Both are low-difficulty but demand caution due to the altitude — don't rush, and turn back if you feel dizzy.

Frequently Asked Questions

How high is Chungará Lake and is it the highest lake in the world?

Chungará sits at 4,517 meters (14,820 feet), making it the 29th highest lake in the world and the 10th highest in South America. It is not the highest — that title goes to a small lake in the Himalayas — but it is the highest large lake in Chile and one of the highest accessible by paved road.

Can I visit Chungará Lake without a tour?

Yes. The lake is accessible via Route 11-CH, and independent travelers can drive there. Entry to Lauca National Park is free, but you must register with CONAF — either at the ranger station at the lake or online via the Pases Parques platform. The park is open Tuesday to Sunday. Note that there is no public transportation directly to the lake; you'll need your own vehicle or a tour from Arica or Putre.

What should I do about altitude sickness at 4,500 meters?

The best prevention is a night in Putre (3,500 meters) before ascending to the lake. If you go directly from Arica, ascend slowly, avoid alcohol and heavy meals, and stay hydrated. Symptoms like headache and shortness of breath are common; if they worsen, descend immediately. There are no medical facilities at the lake, so carry any medication you might need.

Is there food or water available at the lake?

No. There are no shops, restaurants, or potable water sources at Chungará Lake or anywhere inside Lauca National Park. Bring your own water, snacks, and lunch. The nearest supplies are in Putre, so stock up there before heading up. Also pack out all trash — the lake's ecosystem is fragile, and litter has become a visible problem in recent years.