8. Auvergne: The Mysteries of Its Sleeping Giants

Despite its peaceful demeanour, the volcanoes in Auvergne have known a tumultuous past. Large reserves of magma have been discovered recently in the underground depths and a new eruption cannot be ruled out entirely. The Pavin Lake is said to be cursed ... Although today it remains quiet, many stories reveal that is was surprisingly active until the eighteenth century, with villages being engulfed by swirls of lava ... Today, scientists are investigating its deep black waters to try and explain this strange phenomena.