June 2022 – Traversing the state of Idaho between Montana and Washington, the Northwest Passage Scenic Byway (US-12) follows fast flowing and wildly zig-zagging rivers for about 200 miles, paralleling part of the 8,000 mile route that Lewis and Clark’s Corps of Discovery took on their famous out-and-back cross-country expedition in 1805-06.
This is a companion discussion topic for the original entry at https://roadslesstraveled.us/northwest-passage-scenic-byway-us-12-rv-trip/