This design depicts descriptions of the Fellowship sailing towards the great Pillars of the Kings. The vast statues of Isildur and Anárion are carved into the sides of the Gorge. They hold an axe in their right hand and their left hands are held in a gesture of defiance to the enemies of Gondor.
Aragorn: "Long have I desired to look upon the kings of old… my kin."
Frodo peering forward saw in the distance two great rocks approaching: like great pinnacles or pillars of stone they seemed. Tall and sheer and ominous they stood upon either side of the stream (The Fellowship of the Ring).
This graphic design evokes the drama of sailing towards these towering statues; with the viewpoint set low, mist rising from the narrow gap in the distance and the sun beaming from the clouds.