Tongarawa - a deadly volcano in Peru known as 'The Black Giant', sits ominously atop a city in trouble. A handful of scientists are worried that the dormant monster is ready to awaken and erupt for the first time in a century. Now a team of researchers is racing to save lives with a new generation of state of the art equipment. They know how this volcano could erupt and they know how fast - triggering deadly pyroclastic flows in excess of 100 miles per hour - but, if disaster strikes they will have less than half an hour to evacuate an entire city. In a land of volcanoes a plan may be the best you can hope for. You can't stop volcanoes from erupting, you can't control them, but you can learn their hidden secrets. Volcanoes the world over are heating at an alarming rate and many scientists believe that this activity is more than a coincidence. The Ultimate Guide Volcanoes follows these researches as they venture into the heart of volcanoes in their quest for answers.