I saw this film last night and was so mesmerized by it
that I watched it again immediately.  The film was shot from
the perspective of a lonely isolated girl's (Ana's) point of
view and the landscape matches the inner world of the
child perfectly--beautiful, haunting and incomprehensible.
 
Something monumental happened in the adult world and Ana
was accidentally caught at the center of it.
Only that we don't really find out exactly what happened.
This is partly because we, looking through Ana's eyes, focus
on the aspects that would attract the attention of a child,
but mostly because what happened was only partially comprehensible
to Ana, hence, to us.  This is exactly as it should be.

On second viewing, I did figure out what exactly happened, but the
impact is done.  This is one of those rare films that one watches
once to experience the mystery and again to discover the story.

Eugene Xia