Crossing Lac Iriki on Foot · Umnya Desert Camp, Erg Chegaga, Sahara Morocco

Crossing Lac Iriki on Foot

Four days from Foum Zguid, across a dry lake bed and into the dunes of Erg Chegaga.

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A lake you can walk across

Almost everyone crosses Iriki in a vehicle. It takes about five hours.

Lac Iriki is a dry lake in southern Morocco, between Foum Zguid and the Erg Chegaga dune field. It held water seasonally until the Drâa was dammed upstream. What is left is a vast flat pan, cracked and pale, that fills only in exceptional rain years.

The 4x4 crossing between Foum Zguid and M'Hamid runs straight over it and takes five to six hours. It is a good drive. But you see the lake through a window, at a speed that flattens it into scenery.

Walking it takes three days, with a camel caravan carrying the camp and a cook travelling with the group. You cross the pan on the second day, roughly 17 kilometres in a straight line with no shade and no landmark, and you sleep on it. That is the whole point of the route, and it is the only way to understand the scale of the thing.

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4

Days

38 km

On foot

2

Nights in the open

1

Night at camp

2 to 12

Guests, private

Start: Foum Zguid  ·  Finish: Umnya Desert Camp, then M'Hamid El Ghizlane  ·  October to April

The Route, Day by Day

Foum Zguid to Erg Chegaga, on foot

Day 1

Foum Zguid to the western rim

8 km

Meet at Foum Zguid in the morning. A short transfer puts you at the trailhead, then roughly 8 km on foot onto the western rim of the Iriki basin. It is a deliberately gentle first day: enough to get the pack settled and the legs moving, and enough distance that the last village is out of sight before you stop. First bivouac on the rim, looking east across the pan you will cross tomorrow.

Day 2

Straight across the lake bed

17 km

The long day, and the reason to come. Around 17 km directly across Iriki. The surface is hard cracked pan, not sand, so the walking is fast and flat, but there is no shade and no landmark in any direction. The horizon stops behaving normally: distances collapse, and a bush two kilometres away can look like a person a hundred metres off. You walk in the cool of the morning, take a long halt through the worst of the heat under a shade tarp the camels carry, and finish at the eastern edge where the sand begins. Second bivouac.

Day 3

From hard pan into the erg

13 km

The terrain changes completely in a single morning. Around 13 km, starting on the last of the flat and climbing into the soft western dunes of Erg Chegaga. This is the hardest walking of the route, and the shortest: soft sand costs roughly a quarter more effort than the same distance on a path. You drop down to Umnya Desert Camp in the late afternoon. Hot shower, a real bed, dinner, and the telescope out once it is properly dark.

Day 4

Departure

Optional walk

Breakfast at camp. A last walk up the dune above it if you want one, and most people do, then the private 4x4 back to M'Hamid El Ghizlane for onward travel.

What makes it different

Why walk Iriki rather than the dunes

  • A dry lake bed, not dunes: hard flat pan underfoot, white to the horizon, unlike anything else you walk on in Morocco
  • A genuine point to point, starting at Foum Zguid and finishing at Umnya on the far side of the erg
  • Two terrains in one short route, the lake bed and then the high western dunes
  • Camel supported throughout, so you walk with a daypack only
  • A cook travels with the group and prepares every meal in the field
  • The shortest itinerary we run that is still a real crossing rather than a loop

Questions

Where exactly is Lac Iriki?

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Iriki is a dry lake bed in southern Morocco, between Foum Zguid to the west and the Erg Chegaga dune field to the east, within the Iriki National Park. It held water seasonally until the damming of the Drâa upstream. Today it is a vast flat pan that fills only in exceptional rain years, which is why crossing it on foot is possible at all.

Can you actually walk across Lac Iriki, or is it a 4x4 route?

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Almost everything sold on Iriki is a 4x4 crossing, usually described as five to six hours by vehicle between Foum Zguid and M'Hamid. Walking it is a different proposition entirely: three days on foot with a camel caravan carrying the camp, and two nights sleeping out on and beside the pan. The vehicle crossing shows you the lake. Walking it is the only way to feel how large it is.

How hard is it?

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Moderate. The lake bed itself is flat and hard, which makes for fast, easy walking, and the long day is around 17 km. The genuinely hard section is day three, climbing from the pan into soft dune. If you walk regularly and can handle a full day in hills, you will be fine. The route is four days, which makes it the gentlest introduction to real desert trekking we offer.

Is there shade on the lake bed?

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None at all, which is the honest answer and the reason the route only runs October to April. The camels carry a shade tarp for the midday halt, you start walking early, and you rest through the hottest hours. We do not run this crossing between May and September because there is nowhere to shelter if the day turns.

Where do you sleep?

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Two nights in bivouac, one on the western rim and one at the eastern edge where the sand starts, with a mattress and proper bedding set up before you arrive, plus a private toilet tent. The final night is at Umnya Desert Camp in a private tent with an en suite bathroom and a hot shower. Most people sleep in the open on the bivouac nights rather than under the shelter, because of the sky.

When is the best time to do it?

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October, November, March and April are the strongest months. December and January are excellent by day with superb visibility, but the nights on an open pan get genuinely cold, often near freezing. We do not run the crossing from May to September.

What about the stars out there?

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Iriki sits inside the same Bortle Class 1 zone as the camp, the darkest classification on the scale, with no settlement within around 40 kilometres. On the lake bed there is no dune or ridge to block any part of the sky, so you get a full horizon to horizon view, which you do not get inside the erg itself. On a moonless night the Milky Way is bright enough to cast a faint shadow on the pale pan.

How many people?

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Two to twelve, and every departure is private. You will not be walking with strangers.

What does it cost?

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Every departure is private, so we quote each trip rather than publish a fixed rate: the price depends on the size of your group, the season and any extras. Send us the dates you have in mind and we reply within 24 hours with a full quote and itinerary.

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Every crossing is private

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