310 000 31 million 3.1 million 31 000
Oil Hydrothermal/Geothermal Energy Gas Solar
Fourth Third First Second
Faroe Islands Greenland Scotland Norway
Alafoss Gooafoss Detifoss Glymur
Keflavik Hofu Reykjavik Akuyeri
Hekla Eldfell Surtsey Eldgja
Snaefellsjokull Pingvellir Jokulsargljufur Skaftafell
Denmark Norway Great Britain France Finland Sweden USSR Sweden