Jeremy Irons narrates this striking documentary that takes us deep inside some of the most dangerous regions on the planet.
Whether it's the Philippines, Papua New Guinea, Colombia, Chile, Italy or Iceland, each of these countries is home to active volcanoes which are a major threat to local communities. Every day, lava flows, ash, gas clouds and avalanches remain a possibility in these areas. To help avoid disasters, vulcanologists are asked to anticipate and warn of any possible eruptions - to analyse the slightest tremors. Around the world, these volcano doctors use their tools and knowledge to try and protect those who live beneath the deadly craters.