At the end of a traditional Western film the white-hatted hero, who would have sorted out the black-hatted bad guys, rode off into the sunset. The sunset was a symbol of a changing way of life, the sun coming down at the end of the day of lawlessness and civilization would come with the new sun. It's an enduring image. The railway was used as a symbol of approaching civilization too.
Riding off into the sunset is also one adventure ending and another beginning. It's a most romantic image and it's no accident that the cowboy is riding West, to pastures new.
But what happens when you are already on the West Coast, and there is nowhere West to ride to?
Cheers, Tom.

Munzly
GBHs...XXX
How do you think the dolphins evolved?

Just pre-primate West-coast dwellers who'd watched too many Westerns, perhaps?