single vineyard in the municipality of Piesport (Bernkastel area) in the German wine-growing region of Mosel. In the middle lies the small Domherr vineyard. The name is probably derived from the Celtic "col" (hill, mountain). Another interpretation refers to the mica-containing rock or the golden droplets that shimmer on the berries when they are overripe or have noble rot. The third interpretation refers to the preciousness of the wines. The vineyards, which are oriented from the southeast to the southwest in the shape of an amphitheatre at an altitude of 125 to 160 metres above sea level with a slope of 30 to 70%, cover 66 hectares of vineyards. The Dhron vineyard is one of the most important. The deep, highly weathered Devonian slate soils are interspersed with quartz and minerals and have a high proportion of fine soil in some plots. They have an excellent water balance. The rocks of the Mosellorelay protect against the cold north winds. The Riesling variety is mainly cultivated here. Shares in the site are held, for example, by the wineries A. J. Adam, Bischöfliche Weingüter Trier, Blees-Ferber, Grans-Fassian, Haag Willi, Haart Reinhold, Hain Kurt, Kettern Lothar, Lehnert-Veit, Loersch-Eifel, Nik Weis - St. Urbans-Hof, Reichsgraf von Kesselstatt, Reuscher-Haart, Später-Veit and Vereinigte Hospitien.