ravine
its called a ravine
Ravine
a long deep gulley, a narrow valley or gorge
The Colorado River gradually eroded the rocks, cutting the deep gorge we see today.
Another name for deep gorge is canyon or ravine.
The Colorado river gradually eroded the rocks, cutting the deep gorge we see today.
A canyon
canyon
Gorge is a good word, could be a ravine.
A gorge is a deep narrow passage with steep rocky sides.
A gorge is a deep narrow passage with steep rocky sides.