The most characteristic plant in the park is the giant aloe, known locally as the quiver tree or kokerboom. It is perfectly adapted to the dry semi-desert rocky areas found in the Nama-Karoo, able to withstand the extreme temperatures and the infertile soil. This tree, which grows up to five metres high, gets its name from the fact that the Bushmen (San) used the soft branches to make quivers for their arrows. The eye-catching silhouette of the quiver tree is typical of the Northern Cape landscape. When the tree flowers in the winter flocks of birds are attracted to their copious nectar, and baboons can be seen tearing the flowers apart to get the sweet liquor.