Another basalt-column cliff decorated by falling water, Svartifoss in southern Iceland’s Vatnajökull National Park is called “black waterfall” in Icelandic due to the dark color of the volcanic rock. The basalt formation, surrounded by Iceland’s signature lush greenery, has inspired such architectural works as the National Theatre in Reykjavik and was featured in Bon Iver’s music video for the song “Holocene.” It can be reached via a short hiking track, but visitors are warned against swimming as some of the basalt has cracked off from the cliff and created quite a sharp surface under the water.