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Iceland is so photogenic! This is an interesting shot because it is something of a self portrait in addition to being a landscape.  The shadow suggests that you were alone in a desolate area, which conjures up memories for me when I was in a similar situation.  The size of your shadow also lends a measure of scale.  And centering your shadow left to right lets the heiligenschein produce instant vignetting in the lower corners.

There aren't many really dark tones.  I usually like to put a strong black somewhere in my shots, and sometimes end up printing darker than I ought to.  To get some blacks, I'd try tweaking the brightness/contrast a tad to see what happens.