Nicholas Crane is a rare combination: he's an expert cartographer and an international explorer with a charisma that brings his personal obsession alive. In 1992-3 he walked alone for 18 months along the entire mountain watershed of Europe, describing this epic adventure in his award-winning book Clear Waters Rising. His next book, Two Degrees West, was an account of his walk down Britain's central meridian, and was published to great acclaim in 1999. Nicholas' most recent book was his biography of the world's first modern, scientific cartographer, the Flemish-born, 16th-century genius Gerard Mercator. MERCATOR: THE MAN WHO MAPPED THE PLANET was published in 2002. He has presented 2 series of Mapman for BBC television.Follow Nicholas Crane on Twitter at https://twitter.com/nicholascrane .