The Grootberg Range, which consists of conical and flat topped peaks, is of volcanic origin. It is situated about 110 kilometres in the northwest of the city Khorixas, 85 kilometres in the north of Twyfelfontein and in the south of the Joubert Mountains.
Namibia 2007, "Milkbush" (Euphorbia damarana).
The stamp was issued in the 4th Definitive Stamp series 2007-2011.
The stamp is showing the Palmwag area with hills of the Grootberg Range in the background.
The stamp is showing nameless peaks on the edge of the Grootberg Range (north of Palmwag).
The stamp was issued in the Definitive Stamp series 2012.