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...med by the same geological process as Victoria Falls, with cracks in the [[basalt]] riverbed being eroded away to form the drop. Their height is only 10-25 ...ive white water rapids exist, as the river is hemmed in by gorges cut into basalt rock.

...distance upstream from the falls the Zambezi flows over a level sheet of [[basalt]], in a shallow [[valley]], bounded by low and distant [[sandstone]] hills. ...res (5604 ft) wide, carved by its waters along a fracture zone in the basalt plateau. The depth of the chasm, called the '''First Gorge''', varies from

...dangerous state. Opened in 1959, it was built on a seemingly solid bed of basalt. But, in the past 50 years, the torrents from the spillway have eroded that

...ast for about {{convert|200|km}}, cutting through perpendicular walls of [[basalt]] 20 to 60 metres (66 to 200 ft) apart in hills 200 to 250 metres (660 ...wer than the Upper Zambezi, and a high waterfall formed at the edge of the basalt plateau across which the upper river flows. This was the first [[Victoria F