sentences:  Thirteen hundred hectares of vineyards are cultivated—all located around Klöch, Sankt Anna am Aigen and Straden and situated primarily on the slopes of the extinct volcanoes which characterize the landscape.Some vineyards are up to 650 m above sea level.The main grape varieties grown in this region are Welschriesling, Chardonnay (called Morillon), Weißburgunder (Pinot blanc) and Grauburgunder (Pinot gris), Gelber Muskateller, the Traminer family, Sauvignon blanc and Riesling; red wines feature Zweigelt as well as other grapes, including St. Laurent or Blauburgunder (Pinot noir).