Domaine Zind-Humbrecht’s Rotenberg Vineyard shares its western border with Hengst Vineyard. Its steep slope lies on a bedrock of Oligocene limestone. Due to its rich iron content, the soil has an intense brick-red color; this gives the vineyard its name, translated as “red hill.” The vineyards aspect and altitude (over 985 feet) delay ripening and therefore harvest, allowing for noble rot.