sentences:  There are numerous "tombe dei giganti" (Giant graves) in the district of Capo Pecora, and in other areas of territory.Located about northwestward of Cagliari along the southwestern coastline, Arbus on December 31 2004 had a population of 6,895.From a geological point of view, the Arbus region is dominated by low-grade metamorphics intruded, in late-Variscan times, by granodioritic and leucogranitic magmas forming the so called "Arbus igneous pluton".