I have heard it called the rim.
A long narrow and very deep canyon where the ocean floor bends down toward the mantle is called an ocean trench. This is caused by two plates pulling apart.
A long narrow and very deep canyon where the ocean floor bends down toward the mantle is called an ocean trench. This is caused by two plates pulling apart.
A long narrow and very deep canyon where the ocean floor bends down toward the mantle is called an ocean trench. This is caused by two plates pulling apart.
A canyon is a deep narrow valley.
A deep valley with steep sides would be called a gorge or canyon.
Canyon
Such structure could be called a Canyon.
Canyon
Canyon
The answer is COOKIEJOKING IT IS YOUR QUESTION NOT MINE SO HERE IS THE ANSWERCANYONCANYONcanyon
Canyon or ravine.
Ravine, gorge, canyon.