canyon Synonyms

gorge ravine cleft chasm gully valley rift canon defile arroyo void vale trough strath scaur rille ghyll pass wady cwm canid ravines throated slit trench rift valley linn gulley wadi dene notch kloof hollow crevasse couloir coulee coomb combe col clough cavity cavetto basin barranca dale dell dingle hole gullies channel gullet