Mambatuta falls

The Mambatuta Falls is a steep waterfall on the Luapula River, which originates in Lake Bangweulu and flows through Zambia and along the border with the Democratic Republic of the Congo into Lake Mweru.

The Luapula flows south from Lake Bangweulu as a broad, swampy river a few hundred meters wide. It then turns west and runs along the border with the Democratic Republic of Congo. After the Mambatuta falls the river narrows and meanders north, then descends through the Mambilima falls, following which it broadens into a wetland region 150 kilometres that feeds the south end of Lake Mweru.Mambatuta is a steep waterfall that descends in a single vertical drop.

Source: Wikipedia