The Ngorongoro crater, set high in the mountains of northern Tanzania, is a truly remarkable wild animal sanctuary, containing Africa's richest concentration of wild mammals within its towering lava walls. Of the species on view the black rhinos justifiably hold centre stage, not only for their appearance but also because the species has been hunted almost to extinction for the perceived properties of its horn.
Reinhard Kunkel's film captures these rare beasts in their African home.