[citation needed] The two major cataracts are the first below Ubundu, forming a narrow and crooked stream that is hardly accessible, and the last that can be seen and visited from Kisangani.

[citation needed] The last of the seven cataracts of the Boyoma Falls is also known as the Wagenia Falls (French: chutes Wagenia, Dutch: Wageniawatervallen),[2] referring to the local Wagenya fishermen, who have developed a special technique to fish in the river.

They build systems of wooden tripods across the rapids fixed in holes carved in the rock by the water current.

The falls were formerly named after Henry Morton Stanley, who explored the region and noted the fishing technique of the Wagenya.

According to Stanley, "...by taking advantage of the rocks, the natives have been enabled to fix upright heavy poles, 6 inches in diameter, to each of which they attach enormous fish-baskets by means of rattan-cane cable.