its called a ravine
Canyon or a Gorge
Such a valley would be called a gorge.
Rocks buried deep underground must get exposed before they are weathered or eroded
gorge,canyon
The slow, orderly process of erosion, the wearing away of the planet's surface through the action of wind and water, creates canyons. The main creators of canyons is the water, not the wind, however.
ravine
ravine
Ravine
a long deep gulley, a narrow valley or gorge
Gorge is a good word, could be a ravine.
The Colorado River gradually eroded the rocks, cutting the deep gorge we see today.
It could be called a gorge.
Canyon or a Gorge
A deep valley with steep sides would be called a gorge or canyon.
Such a valley would be called a gorge.
- Chasm - Canyon - Ravine - Gorge
Another name for deep gorge is canyon or ravine.