Luangwa River ago, there was no way out and the Luangwa Rift filled with a Rift Valley Lake called the Madumabisa Lake, which rivalled Lake Malawi in size. The water of the lake overflowed in a river to the south-west, towards what is now the Kalahari, where it combined with the Okavango, Upper Zambezi, Cuando and Kafue rivers, emptying into the Limpopo River and flowing to the Indian Ocean. Several geological events combined to produce the current river systems. Faulting produced another graben just to the south of the Luangwa Rift, and running east-west: the Zambezi Rift Valley and the Chicoa Trough.
Lower Zambezi National Park or Lusaka. Most large mammals in the national park congregate on the floodplain, including the Cape buffalo, a large elephant population, lion, leopard, many antelope species, crocodile and hippopotamus. Occasional sightings of the Cape wild dog occur throughout this park which is one of Zambia's best strongholds for them. There are also a large number of species of birds, but no black rhinoceros population remained around the time the national park was declared, in 1983. Lower Zambezi National Park The Lower Zambezi National Park lies on the north bank of the Zambezi River in southeastern Zambia. Until 1983 when the