Canyon
deep valley i think :)
Canyon
A deep valley with steep sides would be called a gorge or canyon.
the river running through rock wear it down into deep valley with the steep sides what is it called
Cinder cone
fjord
That would be CANYON.
- Chasm - Canyon - Ravine - Gorge
A ravine.
A ravine is a narrow, deep valley with steep sides typically formed by water erosion. It is often characterized by its rugged terrain and lack of vegetation.
It is a Canyon as in the Grand Canyon.