The Gewurztraminer only represents a small portion (0.5ha) of the Clos-Saint-Urbain (5.5ha) because it is only planted on the lower part of the vineyard. Despite a steep south facing, the Rangen is located at the entrance of a cold valley at a higher altitude. The valley winds can still be quite cold in June and could affect the flowering of this fragile grape. The vines at the bottom of the slope benefit from the heat gradient produced by the river Thur and are less exposed to the winds. The mineral content of the volcanic soil is also more important at the bottom due to natural migration down the slope. Gewurztraminer is a grape that benefits also from a slightly higher pH in the soil. Despite a late ripeness, the Rangen can reach high levels of concentration like in 2013.