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Regional historical displays.
© OpenStreetMap contributors
Here you can visit the third tallest dam in the U.S., right behind Oroville and Hoover. It was built in 1973 and stands at 717 from the riverbed, looking like a concrete fortress. Tours give you a chance to explore the top and other parts of the facility.
The original objective was to replenish fish populations that might have been depleted by the dam, but it is fun to view the fish and surroundings with the dam in the background.
This marks the site where Lewis and Clark worked with the Nez Perce to carve out canoes that would take them to the Pacific. It can be a quick stop.