What it is
Laguna Cejar is a sinkhole lake on the western edge of the Salar de Atacama, fed by underground brine that evaporates and concentrates salt far beyond seawater levels — roughly five times saltier than the ocean. The result is instant, comical buoyancy: you lie back and read the sky. The water is strikingly clear, ringed by white salt shelves, and photographs deceptively tropical for a lake at 2,300 m in the driest desert on Earth.
The ticket covers a small circuit: Cejar for the float, Ojos del Salar — two circular pools side by side like eyes — for a quicker dip, and the vast Batería shoreline for sunset over the cordillera. Timed slots cap numbers per session, so the water never feels crowded even in high season. Swim time at Cejar itself is limited to about 30-40 minutes; the trip planner helps you sequence the rest of a salt-flat day.
Why go
Floating is genuinely effortless: you cannot sink in brine five times saltier than the sea.
The bluest water in the region, ringed by white salt crusts and volcano silhouettes.
A rare swim in a desert — the mid-trip reset almost every itinerary needs.
One ticket, three stops: Cejar, the Ojos del Salar pools and a Batería sunset shoreline.
Visiting Laguna Cejar
How to get there
Head 19 km southwest from San Pedro toward the salar: 25 minutes by rental car on a paved-then-salt road, or about 40 by bike when the wind allows. Taxis charge CLP 15,000-20,000 round trip. Afternoon tours bundle Cejar with Ojos del Salar and a sunset stop — the cleanest option if you would rather not manage slot times yourself. The same road network links Toconao for a full salar afternoon.
When to go & what to expect
Sessions are sold in timed blocks; late-afternoon slots fill first because the low sun turns the brine amber and the cordillera pink. Expect an exfoliation effect: salt stings cuts, tightens skin and demands a freshwater rinse at the on-site showers. Air is dry and hot (30°C+ in summer), water cool. Towels, sandals, sunscreen and a change of clothes are non-negotiable.
Rules & practical tips
Swim only in designated areas, limit your Cejar soak to the posted time (about 30-40 minutes) and never dive — the salt shelf edges are shallow and sharp. Keep water out of your eyes and mouth. Drones are restricted and pets banned. If you are piecing together an independent desert day, the budget planner shows how Cejar's fee stacks against other paid entries.
Book the 16:00-17:00 slot, pack towel and sandals, and save the freshwater rinse for after Ojos del Salar — your skin will thank you at dinner.
Common mistakes (and how to avoid them)
Cejar is the region's most managed swim — timed slots, posted rules, a real fee — and the mistakes here are almost all avoidable with one evening of planning, especially on a short itinerary where a wasted afternoon is expensive.
Not booking a slot ahead: sessions are capped and the late-afternoon blocks sell out first in high season. Walk-up entry is a gamble, not a plan.
Not knowing the float is time-limited: the Cejar soak runs about 30-40 minutes, and the swim section can close outright when bacteria levels rise. Keep Ojos del Salar and the Batería shoreline as your backup.
Arriving without towel and sandals: brine dries into a salt shell on skin, the shelves are sharp underfoot, and the freshwater showers sit at the top of the circuit.
Entering with fresh-shaved skin, cuts or contact lenses: hypersaline water announces every nick, and one rinse of the eyes ends the session early.
The float is 40 minutes, not an afternoon: book the slot, pack towel and sandals, and hold a sunset backup in case the swim area closes.
Laguna Cejar on the map — and the services around it
The orange pin marks Laguna Cejar (19 km from San Pedro, about 25 min by van). Every other marker is a real service — and every marker has its own page: tap a place to open it, or add it straight to My Atacama Map. Useful if you are self-guiding or planning a stop on the way back to town.
- Landmarks & ruins
- Health & pharmacy
- Carabineros (police)
- ATMs & exchange
- Fuel station
- Transport
- Tourist info & CONAF
- Markets & shops
- Food & cafés
Positions are approximate and meant for orientation — follow the official park signs on site.
Services, food & stays nearby — open a place, add it to your map
The 10 closest places to Laguna Cejar, sorted by distance: tap a name to open its own page, or pin it straight to My Atacama Map without leaving this one.
Distances are straight-line — real driving distance can be longer.
Frequently asked questions
Sources & verification
The official references we used while researching Laguna Cejar: park rules, fees, safety and transport. Everything on this page is written independently — no operator pays for coverage here.
- CONAF — protected-area context for the Salar de Atacama, where the Cejar and Ojos del Salar sectors sit
- SERNATUR — official visitor information for Laguna Cejar and Ojos del Salar
- chile.travel — official destination profile for the Salar de Atacama lagoons
External links open in a new tab and lead to official Spanish-language pages. Fees and access rules can change seasonally — confirm on site or by phone before you travel.
