Iceland’s extreme landscapes may be challenging for those that live here, but they are awe-inspiring and breath-taking. The icy waters of the Silfra rift, an underwater canyon, are known for having “the clearest water in the world” with a visibility of over 100 metres. At the bottom of lakes and rivers, small sand volcanoes belch and bubble, spewing out hot water that ripples through the sand, creating an ever-changing landscape of craters. And beneath raging waterfalls, Arctic char gather in swarms. Volcanic rumblings deep in the belly of the earth, can also be felt in the oceans surrounding the island. Huge hydrothermal chimneys rise up from the seabed, discharging hot water. They are thousands of years old and still growing. At the foot of the chimneys, monstrous-looking wolf fish guard their eggs.