Salmon River Canyon

The Salmon River Canyon is a significant gorge in the United States, formed by the Salmon River in its lower course. This canyon is approximately 30 miles long, 1 mile deep, and up to 10 miles wide. The Salmon River itself originates in Idaho's Sawtooth and Salmon River mountains and flows for about 420 miles before joining the Snake River. It is the largest tributary of the Snake River and passes through a vast wildlife area within national forests. The section of the Salmon River between Salmon city and its confluence with the Snake River is known as the "River of No Return" due to the historical difficulty of traveling upstream. The Snake River, a major stream in the Pacific Northwest, flows through several states before meeting the Columbia River. The lower Snake River, near where the Salmon River joins it, flows through a gorge known as Hells Canyon, which is considered the deepest river gorge in North America.12