Tunnel de Pouilly-en-Auxois - comment la France a construit un tunnel fluvial de 3 km au XVIIIe s.

Welcome to this captivating journey through the history of one of France's most ambitious engineering projects: the Pouilly-en-Auxois Tunnel on the Burgundy Canal. For nearly three centuries, French kings, ministers, and leading engineers were haunted by a single obsession: to connect the Atlantic Ocean to the Mediterranean Sea via an inland waterway, without ever leaving French soil. This was far more than a commercial dream; it was a matter of national security and economic dominance. In this video, we travel back to the 17th century, to the time of Henry IV and his visionary minister Sully, the first to foresee the potential of a union between the Yonne and Saône rivers. We will discover why the geography of Burgundy became an "invisible wall" and why Sébastien Le Prestre de Vauban, Louis XIV's illustrious military engineer, despite his precise calculations, was unable to complete the project due to a royal treasury depleted by wars. You will witness the dramatic duel between man and nature. We will see why traditional locks were powerless against the heights of the Auxois threshold, leading 18th-century engineers, under the direction of Jean-Rodolphe Perronet, to a radical solution: instead of crossing the mountain, they had to pierce it. This decision marked the beginning of a colossal 3,333-meter construction project, an unprecedented feat for the time. The story of the Pouilly-en-Auxois tunnel is a chronicle of technical audacity, mathematical precision, and superhuman human labor. From the first sketches on parchment to the first blows of the pickaxe in the darkness of the rock, discover the price France paid to unite its two seas. Immerse yourself in French history through a visual narrative inspired by the greatest masterpieces of classical painting. Subscribe so you don't miss any of the upcoming chapters of this industrial saga! 00:00 - The Royal Obsession with the Two Seas 03:06 - The Geographical Lock of the Auxois 06:01 - Engineering Under the Restoration 09:03 - The Shadow Army of the Underground 11:58 - Dramas Facing the Elements 14:56 - The Triumph of the Junction 17:53 - The Hell of Hand-Towed Waterway 20:50 - The Revolution of the Electric Lathe 23:45 - The Pulse of the French Economy 26:44 - The Threat of the Iron Ribbon 29:48 - The Village Above the Abyss 33:00 - The Decline of the Navigable Canal 36:09 - Metamorphosis Through Heritage 39:14 - A Legacy at Water's Edge 41:59 - The Liquid Mirror of the Future