Soufriere Hills, Montserrat
The sublime tropical island of Montserrat has a monster in its midst, the glowing lava dome of Soufriere Hills. Since blowing its top in 1995, the Hills has continued to behave badly, destroying capital, Plymouth and rendering most of the island uninhabitable.
Piton de la Fournaise, Réunion
Piton de la Fournaise is one of the world's top five most active volcanoes, having had a major eruption four times in the last eight years. Otherwise, French-speaking Réunion is an idyllic tropical island in the Indian Ocean. French football legend Zinedine Zidane has a holiday home there, We will resist making a cheap comparison of these two hot-headed characters.