Niersteiner ‘Pettenthal’: Approx. 6.5 ha with southeast orientation; curves into a cooler, shaded side valley; weathered, gravelly red slate. Shaped by this cooler exposition, Pettenthal is known for delicate wines with a lively acidity. Tending towards the fresh and aromatic in youth, these wines develop a fine creaminess and complex fruit as they mature.

Beyond the southern end of the Rothenberg Vineyard is the well-known Pettenthal grand cru site. The soil of this famous vineyard is also comprised of red shale, but here it's slightly more weathered. The extremely friable, in certain parcels even sandy, texture yields wine of lighter structure with vibrant elegance. Despite the vineyard’s proximity to the Rothenberg, the two resulting wines differ greatly. The wines of the Pettenthal are distinguished by exotic fruit aromas from the moment of their youth and retain their refreshing character for many years. The steepest parcels of Gunderloch's estate are located in this vineyard.