Complex sentence: The Dunes fields are scattered over a wide expanse of desert, south and southwest and southeast of Ciudad Juarez, in a 2000km2 area known as the Samalayuca Desert.
Split into simpler sentences: The Dunes fields are scattered over a wide expanse of desert, south, southwest and southeast of Ciudad Juarez. They are in a 2000km2 area known as the Samalayuca Desert.