East out of N'Djamena on the one tarred road in the country that goes anywhere, then off it for good: ten days of convoy driving, six of them inside the Ennedi massif — gueltas with crocodiles in them, a sandstone arch 120 metres tall, rock art painted when the Sahara was grassland — and north-west from there to eighteen lakes that sit in a place receiving under two millimetres of rain a year. Out by charter from Faya-Largeau.
N'Djamena
A day of paperwork and one museum. Registration with the national police is required within 72 hours of arrival and your operator will take your passport and photographs away to do it, along with the movement permit you need to leave the capital — neither is optional and neither is quick. What is left of the day goes to the Musée National, which displays a cast of Toumaï, the roughly seven-million-year-old skull of Sahelanthropus tchadensis found in 2001 at Toros-Menalla in the Djurab desert, several hundred kilometres north of here; the original is held by the national research centre in the same city. Then the Grand Marché, and the bank of the Chari with Cameroon on the far side. Keep the camera in the bag in the street: photography requires its own permit and the rule is enforced.
East on the RN1
The road east to Sudan is tarred the whole way and it is the only long sealed run this trip gets. It crosses the Sahelian belt through Massaguet and Bokoro, flat acacia country with cattle on the verges, and it is punctuated every so often by a checkpoint where the permit gets read. Ati is the halfway town, the capital of Batha province, and it exists as a stop rather than a destination. Sleep early: this is the last night before the surface changes.
Abéché
Three hundred kilometres more and you reach the fourth city of Chad and the seat of the Ouaddaï sultanate, which ran an independent state here until the French took it in 1909. The old quarter is mud-brick, the sultan's palace still stands and the town is far older in feel than anything west of it. It is also the logistics hub for eastern Chad, and since the Sudanese war began in April 2023 it has been the base for a refugee response of a scale that is impossible not to notice — the aid fleet in the streets is the single most visible thing about the place. Last fuel, last hotel and last reliable mobile signal for a week.
North to Kalait
The tar ends and does not come back. North through Biltine and Am Zoer on graded piste that degrades into wheel tracks across gravel plains, with the convoy spreading out sideways to stay off each other's dust. Kalait is a road town on the southern approach to the Ennedi, and the sub-prefecture office there is where papers get looked at again. Camp outside it. The first night in a tent is also the first night of the temperature swing — over 30°C by day in December and close to freezing before dawn.
Into the massif — Fada
The horizon starts to stack up: isolated sandstone towers, then walls, then the southern rampart of the Ennedi. Fada is the administrative centre of Ennedi Ouest, a low town of mud and breeze block around a French colonial fort, and it is where the Ennedi Natural and Cultural Reserve keeps its headquarters. Fees are settled here, jerrycans are refilled here, and the reserve's staff will tell you which wadis have water in them this year, which is not a detail — it determines where the camels are and therefore where the route goes.
Wadi Archei
South-east from Fada and into a canyon that narrows until the vehicles stop. From there it is forty minutes on foot over rock to the lip above the Guelta d'Archei — a permanent pool at the bottom of a gorge with cliffs a couple of hundred metres high on both sides, black with centuries of camel dung. Herders bring several hundred animals down the sand ramp to drink in the afternoon and the noise comes up the walls. Camp in the wadi outside the guelta itself: the water is the only water, and the reserve asks that vehicles and people stay clear of the approach the herds use.
The crocodiles
A morning at the pool. West African crocodiles live in it — a relict population left behind when the Sahara dried, stranded several hundred kilometres from any other permanent water, and now down to single figures; published counts over the past two decades have run from about ten animals to fewer than five, and nobody states the number with confidence. It is not the last of its kind, which is how it usually gets described: the same species holds on in the gueltas of the Tagant and Assaba plateaus in Mauritania, where the relict colonies are both larger and better studied than this one. African Parks monitors what is left here. Afterwards walk the side canyons for the paintings, which are on overhangs at head height and take a guide to find: cattle, riders, and in places chariots, from a period when the plateau was grazed rather than survived.
Aloba
East down the wadis to the arch. Aloba stands about 120 metres from the ground to the underside of the span, which is roughly 76 metres across — the longest natural arch known outside China and the Colorado Plateau, and one of the tallest anywhere. Nothing about the approach prepares you for the scale, because there is nothing beside it to judge it against until a vehicle drives underneath. Camp within sight of it. This is the emptiest part of the route and the furthest from help.
North to Bachikélé
North-north-west across the plateau, about seventy kilometres of it from Aloba as the crow flies and rather more on the ground, to a second guelta squeezed between canyon walls in the northern Ennedi. Whether there is standing water depends on the year. The walk in follows the wadi floor between vertical sandstone and the acoustics are the memorable part — the canyon carries a voice a long way, which is presumably why so much of the rock art in this massif is in exactly these places.
West across the plateau
A long crossing back west through the labyrinths — corridors of eroded sandstone standing in ranks, some of them wide enough to drive through and some not, and it is genuinely possible to lose a vehicle from view at fifty metres. The western Ennedi around Terkei holds some of the densest painted sites in the massif. The reserve covers something over 50,000 square kilometres and the rock art within it runs to thousands of sites; the guides know a fraction of them and that fraction takes years to learn.
North-west to Ounianga Serir
The longest day of the route and the one where the country changes. Off the plateau and north-west across open desert with nothing on it, then dunes, and then — with no warning at all — water. Ounianga Serir is fourteen lakes separated by dune ridges, and floating reed covers close to half their surface. That reed is the mechanism: it cuts evaporation on water that would otherwise be gone, in a place that receives under two millimetres of rain a year against an evaporation rate above six metres. Lake Teli is the largest and less than ten metres deep. Camp on the ridge and walk down in the last light.
Ounianga Kebir
Forty-odd kilometres west to the second group: four lakes, of which Yoan is the deepest at 27 metres and so saline that almost nothing lives in it beyond algae. The whole system is fed by fossil groundwater from the Nubian Sandstone Aquifer, laid down when this was a wet climate and not replaced since — which is the honest way to describe these lakes. They are not fed by anything current. They are being spent. Inscribed in 2012 as Chad's first World Heritage site, four years ahead of the Ennedi.
West to Faya-Largeau
The last driving day, west across the Borkou to the largest town in northern Chad — a palmery in a depression, tens of thousands of date palms and a permanent water table under sand in every direction. Faya was fought over repeatedly during the war with Libya in the 1980s and changed hands more than once; the airstrip that gets you out tomorrow is there because of that history rather than in spite of it. Wash, eat something that was not cooked on a fire, and hand the vehicles back.
Out by air
The charter to N'Djamena is about two hours and it is the single most fragile booking on the trip — aircraft in Chad get requisitioned, weather closes the strip and schedules move by a day without much explanation. The alternative if it does not come is three days back down the piste through Salal and Moussoro, so leave at least one clear day in N'Djamena before an international flight rather than connecting on the same evening. If the plane runs on time you land in the early afternoon with a free half-day, which is the right moment for the Grand Marché you did not have time for on day one.
Good to know
Independent travel on this route is not realistic and the question is not really open. Movement outside N'Djamena requires a permit, the northern pistes are unmarked, fuel between Abéché and Faya has to be carried, and there is no recovery service and no medical evacuation that does not start with a satellite call — an authorised operator running a convoy of at least two vehicles with a mechanic, a cook and a sat phone is the only sane way to do it, and it is what every visitor to the Ennedi does. Book a long way ahead: the season is November to February and the operators running it are a handful of firms in N'Djamena and Europe. Visas: almost every nationality needs one arranged before travel, either at a Chadian mission or through the government e-visa portal, and which of the two is actually issuing has changed more than once in recent years — check the portal and your nearest mission in the same week and go with whichever is working. Expect to upload a passport scan, photographs, a return ticket and either a hotel booking or a letter of invitation from your operator, and allow weeks rather than days. A yellow fever certificate is compulsory for entry, not conditional on where you have come from, and it is genuinely checked at N'Djamena — travel without it and you will be refused. Within 72 hours of landing you must register with the national police, and separately obtain the movement authorisation that lets you leave the capital; operators handle both, but they need your passport for a day, so do not plan to drive out on the morning after you arrive. Photography is its own permit, obtained through the security ministry, and even with it you do not photograph government buildings, military installations, airports, bridges or anyone in uniform. This is not a formality that gets waved through — cameras are confiscated and people are detained for it, including at ordinary roadblocks, and a checkpoint on the RN1 is the wrong place to argue about the difference between a bridge and a view. Money is the CFA franc, pegged to the euro, so euros in cash are the useful currency here and dollars are not; bring the whole trip in notes. Cards work in a handful of N'Djamena hotels and nowhere else, and the ATMs stop at Abéché in practice. Health: malaria is present in the south and through the Sahelian belt including N'Djamena, so take prophylaxis for the trip even though the desert half carries little risk; Chad sits in the meningitis belt and vaccination is worth discussing; and medical facilities outside the capital are minimal, which is the real reason operators carry satellite communications and comprehensive evacuation cover. Check that your insurance covers both the region and the activity, because a great many policies exclude countries under an advise-against-travel warning, and much of Chad is. Which brings up the geography of the advisories, because they matter more here than the weather, and it is worth being blunt about it: this route does not skirt the warned areas, it drives through them. Most Western governments advise against all, or all but essential, travel to the whole of Chad, and the zones they single out — the Lake Chad basin in the west, the border strip with Libya, the Tibesti in the far north, the frontier with the Central African Republic and, since the Sudanese war broke out in April 2023, the entire eastern border region — take in the northern provinces this itinerary spends ten of its fourteen days in. Abéché is in Ouaddaï, under 200 kilometres from the Sudanese border and serving as the logistics floor for a war on the other side of it. Aloba and Bachikélé are in Ennedi Est, a province that also runs to that border. The Ounianga–Faya corridor is a known route for armed movement and trafficking out of Libya. None of that makes the massif a front line — it is empty, and the real hazards in it are banditry, breakdown and distance from help — but do not book this in the belief that the Ennedi sits outside the advisory map, because it does not, and your insurer will read the map before you do. Read your own foreign ministry the week you travel, take the operator's advice on the day, and accept that the itinerary can be rerouted or called off at short notice. There is also unexploded ordnance to think about. Northern Chad is among the most mine- and UXO-contaminated regions in the Sahara, laid through the wars with Libya in the 1970s and 1980s, and Borkou and the ground around Faya-Largeau are badly affected — clearance has been running for years and is not finished. The rule is the operator's rule and it is not a suggestion: stay on the tracks the drivers use, do not wander off open ground to find a camp spot or a photograph, do not walk into abandoned military positions, and leave anything metal on the desert floor exactly where it lies. Inside the reserve the rules come from African Parks, which has managed the Ennedi under agreement with the government since February 2018: fees are paid at Fada, camping is not permitted at the gueltas themselves, and drinking water at a guelta belongs to the herds before it belongs to anybody else. Nights in December and January drop close to freezing on the plateau while days sit above 30°C, so pack for both. And nothing here runs to a timetable — the charter, the permits and the pistes all have opinions of their own.
Shorter or longer?
Five more days and a second charter, south-east from N'Djamena to the airstrip at Zakouma — 3,000 square kilometres of Sudanian savanna where an elephant population that fell from over 4,000 to about 450 has been climbing again since 2010, alongside more than 1,300 Kordofan giraffe and buffalo herds in the thousands. The park runs roughly December to April and closes for the rains; March and April are the best game viewing, as the water shrinks back into the pans, which does not overlap perfectly with the Ennedi season. Doing both properly means going in early December and accepting a quieter Zakouma, or splitting them across two trips.
Charter both ways to Fada and give the massif six full days — Archei, Aloba, Bachikélé and the western labyrinths — without the four days of driving to reach it or the Ounianga and Faya leg at the end. It costs more per day and less in total, it is far easier on the body, and it drops the two World Heritage lakes and the Ouaddaï towns. The trade is real: the drive east is dull for long stretches, but it is also the only part of this route where you see the country people actually live in.