Much of Iceland’s landscape is old lava fields resulting from eruptions that have spewed a third of the earth’s molten rock during the last 500 years. The country also holds the record for the world’s largest lava flow in 1783. 30 volcanoes are still active. This disproportionate activity is due to the country’s position along the Mid-Atlantic Ridge. The tectonic plates have been moving over a volcanic hot spot for 25 million years.