A little clarification.
That's a snow fence in the foreground, the shadowed riverbank just beyond, and the frozen river is that white space between the two. Beyond that, it's all tundra, flat tundra, without trees or any other sort of obstruction, which makes that sliver of laser-bright luminescence all the more noticeable...and strange.
In all the years that I've lived in the Arctic, I've never seen anything like this. There have been plenty of clear nights in which the moon illuminated the entire snow-covered expanse creating an ocean-like reflection as far as the eye could see.
This night was different.
It's as if a spotlight was trained on one, specific, amazingly limited area.
Very pretty. But kind of eerie.
Sort of Twilight Zone-ish...without the pesky aliens.
At least, as far as I know.