On 14 April 2013, Daniel Graham and his twin brother, Jake, stepped out of their front door in Bristol and on to the path. Longing for a challenge, they set out to complete the adventure of a lifetime: a 3000-kilometre walk through Western Europe. Camping beneath trees and washing in rivers, the journey led them through the quaint villages of southern England and on to the European mainland. Trekking steadily south, they continued on through the arable hills of the Benelux countries, the humble peaks of the Vosges Mountains, the gorges of the Jura Range and, finally, to the French Alps, a majestic barrier of summits and valleys that would lead them on to the Mediterranean Sea.