They are created in a process known as, subduction.
A deep ocean trench is a deep underwater canyon. It is found at the deepest parts of the ocean. It is long, thin, and has steep sides.
The Mariana Trench in the Pacific Ocean which is 10,911 meters deep (35,798 feet or 6.78 miles).
A valley that is underwater.
A valley that is underwater.
Glen Canyon is approximately 710 feet deep, or approximately 220 meters deep. The canyon, with the Glen Canyon Dam, can hold 5,370,000 cubic yards for water.
A deep valley could be called a canyon, such as the Grand Canyon.
A canyon is a deep narrow valley.
It is a Canyon as in the Grand Canyon.
deep deep deep underwater
It is The Marianas trench it is the deepest underwater canyon and i believe the longest at 1580 miles.The mid atlantic ridge stretches 10,000 miles!
canyon
The colca canyon located in Peru, is the deepest canyon in the word at 4360 m.