The Middle Zambezi Biosphere Reserve is a UNESCO Biosphere Reserve located along the Zambezi River in the Zambezi Valley of Zimbabwe. The 2,879,300 hectares (11,117 sq mi) reserve consists of riverine and terrestrial ecosystems unique to the subcontinent. Among threatened species found in the valley are the black rhino, the painted wild dog, and the nyala. The flora consist of Colophospermum/Combretum/Terminalia woodland and the Zambezi riparian forest. At Mana Pools, it comprises the only flood plain ecosystem left in the Middle Zambezi.