thumb|Location of omiramba in the border area of Namibia and Botswana. Omuramba (plural: Omiramba) is the term for ancient river-beds found in the Kalahari Desert of Africa, notably in the North Eastern part of Namibia and North Western part of Botswana. The word is taken from the Herero language. An omuramba provides occasional standing pools of water and more fertility than in the surrounding sand plains. Some specific omiramba are named: Eiseb, Rietfontein, Epukiro, Omatako. They mostly start in the central parts of Namibia and run into the central parts of Botswana.
thumb|Location of omiramba in the border area of Namibia and Botswana. Omuramba (plural: Omiramba) is the term for ancient river-beds found in the Kalahari Desert of Africa, notably in the North Eastern part of Namibia and North Western part of Botswana. The word is taken from the Herero language. An omuramba provides occasional standing pools of water and more fertility than in the surrounding sand plains. Some specific omiramba are named: Eiseb, Rietfontein, Epukiro, Omatako. They mostly start in the central parts of Namibia and run into the central parts of Botswana.
== Description == The depth and width of the beds varies, with some being 3 to 4 km wide. Omiramba that were perennial rivers about 16,000 years ago now flow only for short distances, and only after heavy rains.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).