The Ra Expeditions by Thor Heyerdahl

An engaging firsthand account of building and sailing reed boats modeled on ancient papyrus craft to test whether early African and Mediterranean sailors could have reached the Americas; the narrative follows two daring expeditions—one that ended in failure and a second that achieved a transatlantic crossing—detailing the construction techniques, navigation by sun and stars, storms, shortages, and the camaraderie and conflicts among the multinational crew. Combining travel journal, technical experiment in experimental archaeology, and reflections on cultural diffusion, the book argues that prehistoric sea crossings were technologically and practically possible and explores the implications of such contacts for our understanding of human history.