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Grand Ergs, Algeria, seen from the space shuttle Discovery. 12/1999

auteur: Nasa/Novapix

référence: t-afalg-00002

Image Size 300 DPI: 34 * 34 cm

Two great sand seas occupy northern Algeria, Grand Erg Oriental (Eastern Sand Sea) and Grand Erg Occidental (Western Sand Sea). Both sand seas occupy depressions that are separated by a north-south rise called Mizab. Ergs are areas of large accumulations of sand that take the form of actively shifting dunes, fossilized dunes, or extensive sand sheets.

Keywords for this photo:

1999 - AFRICA - ALGERIA - CLOUD - DESERT - DUNE - EARTH - EARTH FROM SPACE - ERG - HORIZON - LIMB - SAHARA - SAND - STS-103 -