" rift valley "

[Noun]  | "rift valley" 

1: an elongated valley formed by the depression of a block of the earth's crust between two faults or groups of faults of approximately parallel orientation

Origin: 1894 ;

[Noun]  | "Rift Valley fever" 

1: an acute, usually epizootic, mosquito-borne disease of domestic animals chiefly of eastern and southern Africa that is caused by a bunyavirus (species Rift Valley fever phlebovirus of the genus Phlebovirus), is marked especially by fever, abortion, and death of newborns, and is sometimes transmitted to humans usually in a milder form marked by flu-like symptoms

Origin: circa 1931 ;

 (Great) Rift Valley, Africa;

[Geographical name]  | "Great Rift Valley" 

1: depression in southwestern Asia and eastern Africa extending with several breaks from the valley of the Jordan River south to central Mozambique

[Noun]  | "rift valley"