Gunnar said there were ships in the sky, meaning clouds, but if you go to Iceland in the winter, you will find whole mountain ranges in the sky, that appear and disappear, created by the mountains out of the wind off the Atlantic.
They’re not exactly shadows and not exactly mirrors. They are amazingly alive. I suspect that the medium (the wind) does that. The image above is near Arnarstapi, on Snæfellsnes. The glacier is just around the corner: one of these clouds that stayed.
Iceland sits in water, lots of water, and storm races across it, but that’s not the same as saying that the snows of an Icelandic winter are a curse from the sea. It’s the mountains that make them, and the latitude, at the top of the world.
They even channel and intensify the wind! Iceland is not, you see, exactly shelter.