Iceland has hot springs even in a very cold climate. The hot springs are the result of snow melted by the heat within escaping on the surface of the earth. Hot water also comes out of the midocean ridges, creating black smokers. Iceland has rocks that are in a hexagonal pattern. These rocks are formed from volcanic eruptions, which occur when the heat within escapes at the surface of the earth.
Volcanic activity is seen along midocean ridges.
Pillow lava and black smokers are NOT common in Iceland, so no credit was given for these answers. Acid neutralizing capacity is the buffering capacity of a water system. Acid neutralizing capacity does not protect from all forms of pollution. For example, ANC will not protect from pollution by bacteria or nitrate since they are not acidic or basic. Therefore, a comment about being protected from pollution did not receive credit, since it is inaccurate.