i was surprised. but according to this: http://www.volcanodiscovery.com/en/santorini.html my mistake, there's a geyser in slovakia: http://commons.wikimedia.org/wiki/File:Herlany_gejzir.jpg
you could argue that iceland is half european, half north american. i'm not sure it matters that much, but i think they consider themselves part of europe. ever been? they have early texts of the sagas at the culture house and an interesting exhibition on bookbinding. it's a fascinating place that's well worth a visit.