On the Socotra Dixam plateau, the dragon blood tree forms a shaded vault. The "Draceana cinnabari", also known as the dragon blood tree is a vestige of a prehistoric flora that vanished on the African continent. It is famous for its blood-red sap, used in dyeing, in cosmetics, or as a medicinal remedy. This tree and others such as myrrh and frankincense trees have made Socotra famous since Antiquity.