Richat StructureAbout Richat Structure
The Richat Structure is a large, circular geological formation in the Sahara Desert of Mauritania’s Adrar region, easily visible from satellite imagery and aircraft. It is often nicknamed the ‘Eye of the Sahara’ because of its concentric ringed appearance.
The feature consists of multiple concentric rings of exposed bedrock and ridges forming a roughly circular pattern some 40 kilometres in diameter; the rings reveal sedimentary and igneous rock layers that have been differentially eroded. The structure is of geological interest rather than archaeological significance.
Scientific interpretation describes the feature as an eroded dome or anticline where concentric layers have been exposed and worn down over long time scales, rather than the result of a meteorite impact. The Richat Structure has been studied for its stratigraphy and unusual geomorphology.
It sits in the arid Adrar plateau of central Mauritania near scattered oases and the historic caravan town of Ouadane, within a remote part of the Sahara that is accessible by vehicle from regional centres.
- Diameter: A prominent circular geological feature about 40 kilometres across formed by uplift and erosion, commonly called the ‘Eye of the Sahara’.
- Geological origin: Not an impact crater; geological studies describe it as an eroded anticline and concentric erosion pattern exposing different rock layers.
Best Time to Visit Richat Structure
Visit during the cooler dry season (November-March) for manageable temperatures and safer travel conditions.
Weather & Climate near Richat Structure
Richat Structure's climate is classified as Hot Desert - Hot Desert climate with very hot summers (peaking in July) and mild winters (coldest in January). Temperatures range from 12°C to 43°C. Very dry conditions with minimal rainfall with a pronounced dry season.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Ideal | 12° - 26° | 19° | 1 mm | mostly sunny | 29% | 4.3 m/s | 1.2 high | 10.9h |
| February | Ideal | 14° - 29° | 21° | 1 mm | mostly sunny | 26% | 4.4 m/s | 1.6 very high | 11.3h |
| March | Ideal | 17° - 32° | 24° | 1 mm | clear | 21% | 4.2 m/s | 2.0 very high | 11.9h |
| April | Ideal | 19° - 35° | 27° | 1 mm | clear | 20% | 4.6 m/s | 2.3 extreme | 12.5h |
| May | Ideal | 22° - 38° | 30° | 1 mm | clear | 18% | 4.7 m/s | 2.5 extreme | 13.0h |
| June | Ideal | 25° - 42° | 33° | 1 mm | clear | 18% | 4.6 m/s | 2.4 extreme | 13.3h |
| July | Ideal | 27° - 43° | 35° | 4 mm | clear | 21% | 5.2 m/s | 2.4 extreme | 13.2h |
| August | Ideal | 27° - 42° | 35° | 11 mm | mostly sunny | 27% | 4.5 m/s | 2.4 extreme | 12.7h |
| September | Excellent | 26° - 40° | 33° | 15 mm | mostly sunny | 28% | 4.0 m/s | 2.1 extreme | 12.2h |
| October | Ideal | 23° - 37° | 30° | 2 mm | mostly sunny | 27% | 4.0 m/s | 1.7 very high | 11.5h |
| November | Ideal | 18° - 32° | 25° | 1 mm | mostly sunny | 30% | 3.6 m/s | 1.4 high | 11.0h |
| December | Ideal | 13° - 27° | 20° | 2 mm | mostly sunny | 31% | 3.9 m/s | 1.1 high | 10.7h |
How to Get to Richat Structure
Nearest staging towns are Atar and Ouadane in Mauritania; overland travel in 4x4 vehicles is typical and often requires multi-day desert trips. Some tour operators offer flights to nearby airstrips followed by 4x4 transfers.
Tips for Visiting Richat Structure
- The Richat Structure is in a remote desert region-arrange transport with local tour operators based in Ouadane or the regional capital, Nouakchott.
- Flights to nearby airstrips are seasonal-most visitors arrive by 4x4 over several days from Ouadane or Atar.
- Bring ample water and desert survival supplies; mobile coverage is limited.