An inconspicuous hill on the Spanish Island of La Palma bursts open, releasing an avalanche of lava. One man watches on helplessly as his home, along with all of his possessions, burns to the ground.

Mount Nyiragongo in the Democratic Republic of Congo erupts and smothers the nearby city of Goma with lava, taking 33 lives and destroying 4,000 homes.

Mount Etna, Europe's largest and most active volcano, is in the throes of her most violent eruption in recent years and hitting towns and cities below it.

A hill above the village of Grindavik in Iceland bursts open and the Fagradasfjall volcano is born - Chris Horsley helps predict its path.

Chris Horsley returns to the Congo to investigate a huge 10-mile-long fracture that runs directly from the slopes of Nyiragongo volcano down to lake Kivu and visits a nearby farming village where a deadly phenomenon called Mazuku or "Evil Wind" is killing livestock?

Chris journeys to Iceland to install vital early-warning systems on one of the country's most dangerous volcanoes - the glacier covered monster, Katla. Katla's twin volcano, Eyjafjallajökull, infamously erupted in 2010, shutting down European airspace. But experts believe Katla is ten-times more explosive.

In the South of Italy, Chris Horsley joins a mass-scientific effort to inspect Stromboli and install monitoring-systems as close to explosive craters as possible. Chris also travels to Vulcano where the entire island is emitting toxic gas, could this be a sign of an imminent eruption.