Part of the genius of Star Wars was how much was going on in the background, not part of the story but contributing to it nonetheless. Like the huge skeleton in Tatooine's desert. Threepio and Artoo walk right by, not even noticing, yet it made you feel that this was an alien world with its own history and biology. That's why I love the mystery of this photo out of Newfoundland:

What is it? How old is it? Maybe it was a walrus, eaten by a polar bear. Or a narwhal trapped in the ice. It might even be some prehistoric creature preserved for millenia. Who knows? And we'll likely never know, as the iceberg is floating and melting away, indifferent to our curiosity. Which is kind of how I prefer it, actually.
(Full story here.)