Hey Beoing people: How did these planes get there? How do they get out?

There are always planes in this area west of E Marginal Way, across the street from Boeing Field. I’ve always wondered, how did they get there? How do they leave?

From what I can tell there’s no “plane crossing” here over to the runway. Is there a plane tunnel maybe that we can’t see from here? That’s the only thing I can think of.