Iceland

Many fjords punctuate Iceland's 4,970-kilometre (3,088-mile) long coastline, which is also where most settlements are situated. The island's interior, the Highlands of Iceland, is a cold and uninhabitable combination of sand, mountains and lava fields. The major towns are the capital city of Reykjavík, along with its outlying towns of Kópavogur, Hafnarfjörður and Garðabær, nearby Reykjanesbær where the international airport is located, and the town of Akureyri in northern Iceland. The island of Grímsey on the Arctic Circle contains the northernmost habitation of Iceland, whereas Kolbeinsey contains the northernmost point of Iceland. Iceland has three national parks: Vatnajökull National Park, Snæfellsjökull National Park, and Þingvellir National Park. The country is considered a "strong performer" in environmental protection, having been ranked 13th in Yale University's Environmental Performance Index of 2012.
Geology
A geologically young land, Iceland is located on both the Iceland hotspot and the Mid-Atlantic Ridge, which runs right through it. This location means that the island is highly geologically active with many volcanoes, notably Hekla, Eldgjá, Herðubreið and Eldfell. The volcanic eruption of Laki in 1783–1784 caused a famine that killed nearly a quarter of the island's population. In addition, the eruption caused dust clouds and haze to appear over most of Europe and parts of Asia and Africa for several months afterward, and affected climates in other areas.