Lake Assal

LakesTadjoura,Djibouti

The lowest point in Africa, 155 metres below sea level in Djibouti, a crater of brine saltier than the Dead Sea that floats you effortlessly.

September·Quiet month

May–Sep

The lake still shimmers turquoise, but the heat here is brutal. In the shadeless open, temperatures top 45°C at the coast and pass 50°C on the salt flats. In June and July the khamsin wind off the desert hurls dust that blurs the view. Nothing formally closes; tours simply thin out.

Year-round The turquoise salt lake, Africa's lowest point, and its cracked white salt shore are here year-round; the cool season, November to February, spares the 50°C heat.

Lake Assal is a crater lake in Djibouti, 155 metres below sea level and the lowest ground in Africa. The sea is ten kilometres away and gets in anyway, seeping through the rock into a basin with no outlet. Nothing leaves except water vapour, and in this heat a great deal of it does. What stays behind is brine among the saltiest on the planet, and saltier in its depths than the Dead Sea. The rest of it is crust. A sheet of white salt rings the shore, cracking and popping under your boots, and close up you can watch it building in ridges and knobs as the brine dries. Along the waterline it sorts itself into ribbons of white, grey and ochre where different minerals come out. Wading in off the salt shelf, the water pushes back. It is dense enough to hold you at the surface, so you bob rather than swim, and it feels almost oily on the skin. Anything left in it for long comes out with a shell of white crystal on it. From the rust-red terraces above the shore the whole basin fits into one view: white pan to the horizon, navy lake below, heat haze on the mountains beyond. Afar salt cutters still work the crust by hand, prising it up in solid slabs rather than scooping it loose, and loading the slabs onto camels. A caravan can run for kilometres and takes days to reach the Ethiopian highlands, where the salt is traded for grain and coffee. All of this sits on ground that is coming apart. Three plates are pulling away from each other here, and one day the sea will stop seeping and simply flood in. In November 1978 the process showed itself: over about a week the Ardoukôba volcano fissured and the two sides of the rift jerked more than a metre apart, spilling fresh basalt. The road in crosses that lava, which is younger than most of the people driving over it.

Worth knowing

Good to know

Come November to February and start at dawn — even in the cool season the sun turns punishing by mid-morning, and with no shade anywhere on the salt the early hours are the only bearable ones.
There's no town and nothing to buy anywhere out here — carry all the drinking water and food you'll need for the day, and don't count on any phone signal on the flats.
The salt crust is sharp enough to cut bare feet and thin soles — wear closed, sturdy shoes, and tread carefully near the shore, where jagged salt ridges hide beneath a thin film of water.
Keep wounds and your face out of the water — the hypersaline brine burns any open cut and must never be swallowed, so rinse off with fresh water when you leave.
Bring dark sunglasses and a wide-brimmed hat — the white salt hurls back a fierce glare that peaks near midday, while the air is clearest and the light kindest in the first hour after sunrise.

Things to do

1
Walk on the salt crust
Step out onto the blinding white flats where the salt sheet cracks and pops under your boots. Kneel close and you can watch it building in ridges and cauliflower knobs, still growing as the brine evaporates. Along the shoreline it sorts itself into ribbons of white, grey and ochre where different minerals crystallise, running up against the bare, sun-scorched mountains.
2
Float where the brine won't let you sink
Wade in off the salt shelf and the dense water pushes back, holding you at the surface so you bob rather than swim — an eerie, effortless float on brine that feels almost oily against the skin.
3
Cross Ardoukôba's black lava fields
Trace the shore where black basalt meets the white salt pan. The dark volcanic rock, thrown up by the rifting that keeps splitting this valley, sets the turquoise water and glittering flats into sharp relief.
4
Take in the pan from the red terraces
Climb one of the rust-red mineral terraces above the water and the full scale opens up: a white salt pan running to the horizon, the navy lake below, and heat-haze blurring the mountains beyond.

Watch

Nearby

90 km