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A.Savin CC BY-SA 4.0 Wikimedia Commons

Dallol (hydrothermal system)

Volcano

A hydrothermal area in Ethiopia's Danakil Depression, Dallol displays acid hot springs, mineral terraces and salt flats; photographers, geologists and adventurous travelers visit under guided conditions to see its otherworldly mineral deposits.

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In this guide

Dallol (hydrothermal system) essentials

Address: Dallol hydrothermal field, Afar Region, Ethiopia (Danakil Depression)
Hours: Site accessible at all times but visits are best done during daylight hours
Admission: No admission fee; travel operators for organized trips supply logistics (permit requirements may apply for protected areas).
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About Dallol (hydrothermal system)

Dallol is a hydrothermal area in the Danakil Depression of Ethiopia’s Afar Region, known for its striking salt formations, hot springs and vivid mineral deposits. It is an active geothermal landscape where salt, sulfur and iron minerals produce bright colours and sculpted surfaces.

The site is dominated by salt flats, hot springs, acidic pools and fumarolic activity that form ephemeral ponds and terraces. Photographers and scientists often visit to document the unusual mineralogy and geothermal features, though conditions are extreme and variable.

Geothermal upwelling and the evaporation of highly saline fluids create the terraces, chimneys and pools observed at the site; ongoing hydrothermal activity continually alters the surface formations.

Dallol sits within the Danakil Depression in northeastern Ethiopia, a tectonically and volcanically active lowland region of the Afar Triangle. The surrounding landscape is arid salt plain and volcanic terrain and the site is reached via long road journeys from regional towns.

  • Mineral colours: The site is notable for extremely acidic, colorful mineral deposits and ephemeral hydrothermal pools formed by rising hot, saline fluids rich in iron, sulfur and salts.
  • Access and safety: The area is remote, geothermally active and very hot; visits are typically undertaken by guided geological or scientific expeditions with appropriate safety precautions.
Things to Do
When to Go

Best Time to Visit Dallol (hydrothermal system)

Best during the cooler months (October-March) when daytime temperatures are more tolerable and desert travel is safer.

Cool season
October-March · Daytime 25-30°C (77-86°F), nights cooler
Relatively milder temperatures for travel; better for camping and fieldwork.
Hot season
April-September · Daytime often 35-45°C (95-113°F)
Extremely hot and less comfortable; strong evaporative effects accentuate color contrasts.

Weather & Climate near Dallol (hydrothermal system)

Climate

Dallol (hydrothermal system)'s climate is classified as Hot Desert - Hot Desert climate with very hot summers (peaking in June) and hot winters (coldest in December). Temperatures range from 21°C to 35°C. Very dry conditions with minimal rainfall with a pronounced dry season.

Air Quality: AQI 137 Unhealthy (Sg)
Best Time to Visit
MayAprilJune
Temperature & Rainfall
Temperature Range
40°
Warmest Month
11°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Ideal 21° - 29° 25° 37 mm mostly sunny 56% 2.9 m/s 1.6 very high 11.3h
February Ideal 22° - 30° 26° 32 mm mostly sunny 51% 2.6 m/s 1.9 very high 11.6h
March Ideal 23° - 32° 28° 21 mm mostly sunny 48% 2.5 m/s 2.3 extreme 11.9h
April Ideal 24° - 33° 29° 12 mm mostly sunny 47% 2.3 m/s 2.6 extreme 12.3h
May Ideal 25° - 34° 30° 8 mm mostly sunny 39% 1.9 m/s 2.5 extreme 12.7h
June Ideal 26° - 35° 31° 3 mm mostly sunny 34% 2.1 m/s 2.3 extreme 12.8h
July Excellent 25° - 35° 30° 22 mm partly cloudy 45% 3.0 m/s 2.1 extreme 12.8h
August Excellent 25° - 35° 31° 25 mm partly cloudy 53% 2.3 m/s 2.2 extreme 12.5h
September Ideal 25° - 34° 30° 8 mm mostly sunny 47% 1.7 m/s 2.2 extreme 12.1h
October Ideal 23° - 33° 28° 18 mm clear 45% 2.1 m/s 2.1 extreme 11.7h
November Ideal 21° - 31° 26° 21 mm clear 46% 2.4 m/s 1.8 very high 11.3h
December Ideal 21° - 30° 25° 36 mm clear 51% 2.5 m/s 1.6 very high 11.2h
Getting There & Around

How to Get to Dallol (hydrothermal system)

Access is by organized 4x4 convoys from the regional hub of Mekele or from Semera; most trips route through the town of Berhale and the Afar highlands. Permits and local guides are required-independent travel is strongly discouraged due to remoteness and security considerations.

Tips for Visiting Dallol (hydrothermal system)

  • Travel only with a reputable, experienced tour operator-Dallol lies in a remote, politically sensitive region and conditions can be hazardous.
  • Bring high-SPF sunscreen, a good respirator mask for sulphur fumes, and plenty of water-surface temperatures and off-gassing can be extreme.
  • Plan logistics in advance: fuel, spare tires, and satellite communication are essential; emergency services are minimal or non-existent.