Calabria is a mountainous region located at the "toe" of the Italian peninsula. For centuries, winemaking in the region has been influenced by its inhabitants, most notably the ancient Greeks who cultivated the first wine-bearing vines there. Calabria’s most famous wine is Cirò, first made by the Greeks and considered by some to be the oldest wine produced in the world. The region is characterised by its Mediterranean climate; at the coast it is very hot and dry, while the interior sees cold, harsh winters. The soils of the region are primarily marl, with clay and sand deposits. Although Calabria is a rural region whose economy focuses on agriculture, viniculture accounts for a small portion of land use, with only 30,000 hectares under vine as of 2010. Most of the wine production occurs in the central areas of the coastlines. Calabria is home to 12 DOCs, however only about 5% of the wine there is produced under that classification. Cirò continues to command great respect as a high-quality wine, particularly in its Cirò Rosso Riserva form. Almost all of the region’s DOCs favour the Gaglioppo and Greco grape varieties, though Cabernet Sauvignon and Chardonnay are also used to enhance modern Calabrian wines.