In 1995 British volcanologist Clive Oppenheimer attempted an expedition to one of the wonders of the volcano world, the lava lake of Erta’Ale in the Danakil Depression of Ethiopia. Then, armed Afar tribesmen turned him back. Now, after studying the Erta’Ale for six years through remote satellite sensing, he is determined to risk it all to finally reach his scientific holy grail.