In April of 2022, Libby Tobey, Hailey Thompson and Brooke Hess skied into Marsh Creek in Idaho's Sawtooth Range, towing their kayaks and a sled full of camping gear. The goal: trace the route of anadromous fish from the source of the Salmon River to the Pacific Ocean and advocate removing the four dams on the Lower Snake River that block that migration and are killing that river system.

78 days and 1000 miles away down the tiniest tributaries to the massive whitewater of the main rivers, through soul-killing paddling slogs in dead impoundments, portages amid highways and traffic, wind and sun, joy and tribulation, they found themselves on a spit of sand and mud at the mouth of the Columbia, drinking champagne amid wind-driven waves of salt water. Hal caught up with Libby Tobey in Idaho and with Hailey Thompson in Alaska for an account of the adventure, and a discussion of what is at stake in the debate over the fate of the lower Snake River dams.