Denis-Huot / Long-horned grasshopper (Ephippiger sp) on milk bush (Euphorbia damarana) in the Damaraland, Namibia

Gerry Ellis / Milkbush (Euphorbia damarana) in sandstone desert, Huab River Valley, Damaraland, Namibia

Martin Gabriel / {Euphorbia damarana} plant, Damaraland, Namibia

Tony Heald / Euphorbia damarana growing in desert. Favorite food of rhinos, Damaraland, Namibia

Oriol Alamany / Endemic Damara milk-bush (Euphorbia damarana), at dusk in the rocky desert in Palmwag Conservancy, Damaraland, Namibia, August

Oriol Alamany / Landscape with endemic Damara milk-bushes (Euphorbia damarana), in the rocky desert in Palmwag Conservancy, Damaraland, Namibia, August