Spanning 23,000 miles, the Tropic of Capricorn marks the southernmost border of the tropics and is a place of both amazing beauty and overwhelming human suffering. Starting in Africa and heading east through Australia and South America, Simon Reeve conducts a mammoth expedition along the entire length of the tropic in this thrilling account. Along the way he encounters breathtaking landscapes and truly extraordinary people, from Bushmen of the Kalahari and Namibian prostitutes battling with HIV to gem miners in Madagascar and teenagers in the Brazilian favela once described as the most dangerous place on earth. Collected here are the most daring adventures, the strangest rituals, and the most exotic wildlife in the world, all linked together by one invisible line.