"rift valley"^^ . "RiftValley"^^ . "ENVO:00000302"^^ . "Wikipedia:Rift_valley"^^ . "SWEETRealm:RiftValley"^^ . "FTT:684"^^ . "valley"^^ . . "ENVO"^^ . "A valley created by the formation of a rift, i.e. place where the Earth's crust and lithosphere are being pulled apart by tectonic forces."^^ . "rift zone"^^ . .