Step 1 : Introduction to the question "In which state is the deepest river gorge on the North American continent found?"
...Where is the deepest canyon on earth? The Yarlung Tsangpo Grand Canyon (or Tsangpo Canyon), along the Yarlung Tsangpo River in Tibet, is regarded by some as the deepest canyon in the world at 5,500 m (18,000 ft). It is slightly longer than the Grand Canyon in the United States.
How deep is the Snake River in Idaho? The lower Snake River, from Weiser to the mouth, flows through a gorge 1 mile (1.6 km) or more deep known as Hells Canyon, the deepest river gorge in North America. The Salmon River, its largest tributary, joins the Snake near the downstream end of the canyon section.
