The island has high geothermal activity on what is named the Mid-Atlantic Ridge zone. The volcanic activity creates these hot springs that are truly amazing. It is an outstanding experience to encounter these geysers - sittiing among the amazing and varying nature on Iceland, possibly during the time of year with light 24 hours a day (known as Midnight Sun), or during the time where you can see the Northern Lights.
Combine seeing the Geysers with a Reykjavik city break, Whale Safari, The Blue Lagoon, The Pearl, Videy Island, the National Museum, the Saga Museum, exploring the South Coast and more.