These two maps together follow the course of the Snake River from Lewiston to Pittsburg Landing. They survey the Hell’s Canyon region, which is the deepest river gorge in North America at almost 8,000 feet and deeper than the Grand Canyon. The Corps of Engineers concluded that the river was not suitable for improvement. However, it has become a popular recreation destination.

A. Map of Snake River from Lewiston to the Mouth of the Salmon River, by T.W. Symons, (23.5 x 35.3"). Divided into two strip sections with shading along the river indicating rugged terrain.
B. Reconnaissance Map of Snake River from the Mouth of Salmon River Up to Pittsburg Landing…, by Capt. William W. Harts, (17.5 x 38.5"). Includes a small inset map showing this stretch of the Snake River within the greater Pacific Northwest region.

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Condition: A+

Fine. Issued folding.