The North Pole was not always just ice, coordinates, and silence. Throughout history, navigators, cartographers, and explorers recorded magnetic anomalies, unexpected ocean currents, and compass behavior that does not fit neatly within the simplified model taught today. Many of those accounts were ignored; others disappeared over time — yet some survived as echoes too consistent to be dismissed. In Mount Meru & Rupes Nigra – The Magnetic Mountain of the North Pole , Adriano Casagrande guides the reader through an investigation that connects ancient maps, classical nautical testimonies, and technical observations of the modern Arctic. Without resorting to easy fantasy or unfounded claims, the book carefully examines the possibility that the North may once have been understood differently: as a dynamic center influenced by complex magnetic and maritime forces. The work explores: Historical reports of magnetic instability in the North Atlantic - Ocean currents that challenge simplified explanations - The cartographic legend of Rupes Nigra and its disappearance from maps - The ancient concept of Mount Meru as the axis of the world - The lost book Inventio Fortunata and the echoes that reached later generations - The relationship between magnetism, ice, water, and polar rotation This is not a book that offers easy answers. It is a work that invites reflection, critical analysis, and a reconsideration of accepted assumptions. The original texts of many sources did not survive — yet what remains forms an intriguing pattern, repeated across centuries, cultures, and contexts. Mount Meru & Rupes Nigra is intended for readers interested in history, ancient cartography, navigation, polar geography, and the boundaries of accepted knowledge. A book that does not impose conclusions, but presents evidence, context, and connections — leaving the reader with the final role of witness. The North is still there. The compass still moves.