Dimmuborgir (Dark Castles) is a lava field near the much more mellow Mývatn area.
Allegedly, here it is where Satan landed after his fall (or did he leave deliberately?).
What makes the place spooky are not so much the bizarre rock formations but rather the cracks one can see everywhere: Are they just signs of decay, or an indication of growth and an immanent emergence of something else?
At least, the holes and tunnels seem to always promise a way out.
But what about those who got stuck and now have to look back at us, frozen in rock for millennia?