On the east slope of BNSF's Stevens Pass mainline right where the grade increases to its steepest and final climbing miles is a narow gap in the mountains called "The Slot". Here we see a westbound BN mixed freight as it roars upgrade from Merritt Washington. Th first two engines are on the short bridge over Nason Creek.

Many of the locations seen in Martin's photos of Stevens Pass will be seen in full motion in Iron Horse America's upcoming Video feature on the line, including this scene.