Erg (Sand Sea)

An erg, also known as a sand sea, is a large, shifting area of desert covered mainly by vast fields of sand dunes. These dunes are shaped by the wind, creating patterns that can change over time. Ergs typically form in arid regions where there’s little vegetation, allowing loose sand to accumulate. They can stretch for hundreds of miles and are common in deserts like the Sahara and the Arabian Desert. Despite their empty appearance, ergs are dynamic landscapes that support specialized ecosystems and are fascinating examples of natural landforms shaped by wind erosion and deposition.