Mbumba Luangu, called the rainbow snake, an enormous snake when wanting the rain to stop falling rises up out of the water and slithers up the nearest tall tree. The rainbow is his reflection. (Myth of various peoples on the Congo-Gabon borders) A.G.H.
Savil, Sheila. Pears Encyclopedia of Myths and Legends. "Western and Northern Europe, Central and Southern Africa." London. Pelham Books Ltd. 1977. p. 157