As bdsa said, 99 percent are from that Wikipedia page as is, but there's a few dozen I've added in that I've stumbled across and favourited over the years.
Not the poster, but it's my blog, funny seeing it posted here. This was actually from June this year, which is supposed to be the sunniest month. I got to see just five islands, so there's still plenty more to explore. The cliffs and the rough sea are a mesmerising sight, I remember sitting for an hour just watching the waves crash along the base.
Thank you, I don't think I'm doing anything particularly special with my process. I like blacks, and keep photos slightly underexposed, something that most phone cameras will avoid like the plague, brightening everything up. Cropping and composition is also more important than it seems IMO.
You just described wonderfully why I'm drawn to remote places. It started with a trip to the interior of Iceland, then Tromsø, and more recently Svalbard and the Faroes.