Desert agriculture, 2000, satellite image. The dark green areas seen in the desert sands are numerous centre pivot irrigation fields. These ones are in the northern Murzuq Desert in Libya. The Murzuq Desert in south-western Libya is an erg desert, part of the Sahara Desert. Image obtained on 8 November 2000, by the Landsat 7 satellite. For a sequence showing the change over the years from 1987 to 2005, see images C007/3775 to C007/3777.