Northbound Amtrak Cascades train 506 heads through Auburn, WA on its run to Seattle. Having started in Portland, it's on the home stretch, with just a stop in Tukwila and then on to its final destination in Seattle.
From Vancouver, BC, to Eugene, OR, this route runs along stretches of Puget Sound and the Columbia and Willamette Rivers. The TALGO trainsets that were the line's backbone for many years were withdrawn from service after they were cited in the 2017 crash