Etna DOC agriculture and viticulture. Later on between 1 800 and 500 B.C. the Greeks occupied Sicily. They contributed a lot to the viticulture and the techniques of vinification. Apart from their expertise they introduced new grapes, among which "Grechetto". Its contemporary name is Grecanico and today it can be found in some areas of the Etna region. Mythology is closely tied to the island as well. The early settlers – the Sicels, who inhabited the island before the Greeks worshipped the God of wine Adranus. The Greeks prayed at Dionysus and the Romans revered the wine God Bacco. Etna volcano and
Mount Etna eruption of Etna since the 1991–1993 eruption that lasted 473 days. Previous eruptions, in 2001, 2002–2003, and 2004–2005 had lasted 3 weeks, 3 months, and 6 months, respectively. Lava flows advanced 6.5 km during the first few days of this eruption but thereafter stagnated at much minor distances from the vents; during the last months of the eruption lava rarely advanced more than 1 km downslope. Through January 2011 to February 2012, the summit craters of Etna were the site of intense activity. Frequent eruptions and ash columns forced the authorities to shut down the Catania airport on several occasions.