Canyon or a Gorge
Such a valley would be called a gorge.
fissure, volcano, ditch, valley.
Valley
Canyon
A canion.
Canyon = This is a Spanish word for a very deep valley carved out by a river. Thanks for using Answers! ʕ◠ᴥ◠ʔづ
canyon = el cañoncliff = la barranca
a deep, steep-sided, narrow river valley
A canyon, or gorge, is a deep valley between cliffs often carved from the landscape by a river.
Grand Canyon :)
Fjord
the river running through rock wear it down into deep valley with the steep sides what is it called
A 'hanging valley' is a valley which is cut across by a river flowing in a deeper valley.
deep valley i think :)
Such structure could be called a Canyon.
Grand Canyon :)
Often times a deep ditch carved over time by running water is called a trench. It can also be called a ditch.