One special delight in Iceland is to watch water create living forms of darkness, written on rock.
Ásbyrgi, Where Water is One of the Huldúfolk
In the past, the water sculpted the rock. Now it sculpts us.
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.
In elf country, off in Borgarfjörður Eystri, you can never be sure. Is it a cat? A mouse? A cat and a mouse? Elves playing at both? Or a whole elvish family, complete with cat and mouse, all sharing a long tail?
It was in these dells that the boy Johannes Kjarval herded sheep and slowly became a painter.
No wonder.
Kollsvík
But just down the beach, check this out:
Did trolls have a war some many thousand years ago, with huge cannonballs, or what? Because this iron is not wedged into the rock from above or behind or any such thing. It’s within the rock. I guess, only the trolls know.
And they’re messing with us.
Right. Reykjavik has cats. Read all about the dears here: A Cat Lover’s Guide to Reykjavik. 20,000 cats in the Capital Region. And 19,000 humans up North in Iceland’s other great city. A coincidence? I think not. I think the cats of Akureyri keep humans. They are super sneaky. Do you see a cat in the image below?
No? That’s because she was just happy to let you know that she was out in the blizzard, and you, well, you weren’t, were you. Sorry, Capital Regioners. A victory for Akureyri here, by the looks of it.
If you follow a troll, you will find more trolls. You will also be on no set path.
If you follow a cairn, you will find more cairns. This is called pathfinding.
If you follow a human figure looking at a pile of trolls, you may or may not find a path, but you won’t be alone.
If you follow a cairn among trolls …
… or a troll cairn among lava bits…
… you are still not on a known path. Mind you, paths might be overrated. There are also walls. If you follow walls, you will find other walls.
But here’s the trick. Once you’ve wandered off like this, you have made a path. It’s what you find along the way that will guide you into getting back. As the sun goes down, you will be glad of these troll sheep guiding you home.
It matters not if they are ‘real’ or not. They are the path.