Canyon
A deep valley with steep sides would be called a gorge or canyon.
A ravine.
the river running through rock wear it down into deep valley with the steep sides what is it called
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.
Try "canyon".
Such structure could be called a Canyon.
a deep, steep-sided, narrow river valley
- Chasm - Canyon - Ravine - Gorge
A narrow valley is a V-shaped valley, or river valley. A narrow valley has steep sloped sides that look like the letter V. They are formed by a strong stream.
A deep narrow valley with high steep sides caused by weathering and erosion is known as a canyon. Canyons are typically formed over long periods of time by the action of rivers, glaciers, or other natural forces cutting through the rock.
A deep steep-sided valley formed by weathering and erosion is called a canyon. Canyons are typically formed by the gradual wearing away of rock by water and wind over long periods of time, creating a deep, narrow valley with steep sides.
A Canyon A Ravine A Gorge A Gully A defile A Linn A Flume A Clough