But it’s the southern coast that’s truly exceptional. Here waterfall-chasers will find Svartifoss (Black Waterfall)—stunning for the contrast between the cascade’s white water and the surrounding black, hexagonal basalt columns. Another southern gem is Seljalandsfoss, considered one of Iceland’s most picturesque falls, with its narrow cascade tumbling nearly 200 feet into a clear pool below. A short trail leads you behind the falling water (a spectacular photographic angle) and into a cavern draped in emerald-green moss, while sunlight glancing off the mist creates a million tiny rainbows.
Down a well-marked trail is another cascade, Gljufrabui. Two-thirds as high as Seljalandsfoss and tucked away behind a wall of rocks, Gljufrabui is easy to miss. But it’s worth the trek, and exploring inside the gorge is half the fun.