Ruacana Falls
Ruacana Falls is a waterfall located in Ruacana, Omusati on the Kunene River in Northern Namibia. The waterfall is  high and  wide in full flood. It is among the largest waterfalls in Africa, both by volume and width. Description 
The Kunene river, which forms part of the border between Namibia and Angola plunges into a 120 metre deep and 700 metre wide gorge - which forms the Ruacana Falls. References

Waterfalls of Namibia
Waterfalls of Angola
Omusati Region