Java In Jeopardy - Exploring the Volcano Scientists regard it as one of the most dangerous volcanoes in the world. Time and again, it has proved its deadly potential – Merapi, the Fire Mountain of Java. The risk of another serious eruption is high and could even have consequences which would be felt globally. Now scientists are looking for a thus far unknown tectonic disturbance: what is the crack which suddenly winds its way through the centre of the volcano? And what danger really lurks in the ground beneath the island of Java?