Wall murals were exceptionally colorful and typically depicted images of Etruscans having a good time at feasts and banquets. The Etruscans' art is divided into three categories: funeral, urban, and holy. Because of Etruscan ideas about the afterlife, the majority of the art that has survived is funerary in nature. However, there are also some paintings from sacred sites and some evidence of urban painters. The Etruscans invented many things for which we have no contemporary counterparts: an extensive system of roads, cities on a scale never before seen, and most importantly metalworking technologies. They also had a unique style of writing called "Etruscan hieroglyphs" which has proven difficult to interpret. Despite these achievements it is still not clear exactly who the Etruscans were or where they came from. Evidence suggests that they emerged as a new people in central Italy around 1200 B.C. It is believed that they migrated south from somewhere in the north of Europe. The reason for this migration is still unknown but may have been due to political changes, increased warfare, or even just because the Etruscans wanted to get away from it all and start fresh somewhere new! Once in Italy, the Etruscans established several large cities including Caere (today's Cervere), Tarquinia (near Rome), Vulci (in today's Lazio region), and Ortygia (now Oviedo in Spain).