Along the path through Iceland’s Thingvellir National Park, I looked up and noticed a rock trapped between two others on the cliff above. It was only days later that it occurred to me to wonder how long it had been there, and whether I had just been lucky that it stayed…
Thingvellir has a special significance for Iceland; it’s where, more than a thousand years ago its parliament first met, the world’s oldest legislative body. It’s also the place where, at a couple of centimeters a year, the European and North American tectonic plates are pulling apart.