Interstate 5

The Nisqually River cuts a huge, open-mouthed valley from the Puget Sound curving back towards the Cascade Range. For millennia it has been a swath across the lowlands, grown under with fir trees and populated with all types of songbirds.
Approaching the river valley in a car on Interstate 5, you see a sign reading “Entering Nisqually Basin”, and then you enter it... And then you’ve left. Did you see anything? Maybe your speed picked up a bit as the road dipped, but the lines guiding you did not change, and the mighty Nisqually Basin passed without notice once again.