I have been all over that area .... took some videos when UP was still running up to Cascade. (I lived in the Boise area for a long time.) The PIN had a nice large depot up at New Meadows ... hopefully still there.
Skip Luke
Switchman (ret): Grand Canyon Railway;
Engineer (ret): Georgetown Loop RR Inc., Sumpter Valley Ry., Monticello & Sangamon Valley;
Dispatcher(ret): Illinois Central, White Pass & Yukon, Burlington Northern Ry.
Mariner, Musician, Miner