Imagine Mordor as a super-exclusive nightclub with a line out the door. Atop the nightclub is a flashing neon Sauron. The door is a miniature replica of the great gate of Mordor
At the door, behind the velvet rope, an Orc bouncer holds a clipboard with a list of names. He lets a few other Orcs in, then re-clips the velvet rope.
Way back in the line we see Frodo and others, trying to see the front of the line. At the back of the group is Boromir saying, “One does not simply walk into Mordor.”
(I hope somebody with the artistic talent actually makes this image!)