2. The Mountains of Fire

Humans have always coexisted with volcanoes. Throughout history, mountains of fire have been revered, loved, hated, and always feared. Volcanoes have shaped our planet, influencing our history, sometimes dramatically, sometimes providing us with the resources to survive. In this episode of Ulysses, Alberto Angela's spectacular journey takes us to one of the most fascinating places on the planet: the Hawaiian Islands, themselves a symbol of the incredible creative force of mountains of fire. We'll go to the point where lava from Kilauea, one of the most famous and powerful volcanoes on the planet, enters the sea, and we'll venture underwater to understand what happens in the embrace between ocean and scorching lava. We'll travel through an underground tunnel where rivers of lava once flowed.