Arco Lagoon
A freshwater lagoon and sandstone arch in the Namibe desert, an unexpected green line in bare rock country.
Updated 18 October 2026
Arco is a lagoon fed by underground water in the middle of otherwise dry country east of Mocamedes, with reeds and palms along it and eroded sandstone cliffs behind, one of which has weathered into a natural arch that gives the place its name. Birds concentrate on the water because there is nothing else for a long way. The rock is banded orange and cream and the contrast with the green strip of the lagoon is the reason photographers stop here.
The landscape
- The arch - a natural sandstone span in the cliff above the water.
- The lagoon - permanent fresh water fed from underground in dry country.
- The banded rock - orange and cream sandstone cliffs behind the water.
- The birds - concentrations drawn to the only water for a long distance.
When to go
May to September is the coolest and most comfortable. Morning and late afternoon give the best light on the rock. Midday in summer is severely hot with no shade.
Practical notes
The track in is rough and a four-wheel drive is sensible. There are no facilities of any kind. The lagoon is smaller than photographs suggest and the visit is an hour.
Nearby
Namibe is west on the coast, and the road continues east to Lubango.
What to pack for Arco Lagoon
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Head torch + spare batteries - Hands-free light is essential; caves are truly dark. Find on Amazon
- Loose, light, long clothing - Covering up beats bare skin in the desert - and locals dress this way for a reason. Find on Amazon
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Where to start if Arco Lagoon is going on the list.
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


