In 1872 - 13 years before Berenger Sauniere would be appointed priest of the nearby village of Rennes-le-Chateau, Abbe Henri Boudet arrived as the new parish priest at Rennes-les-Bains. With a strong interest in history he joined the Society of Arts and Sciences of Carcassonne and immersed himself in studying the history of the area. By 1886, he had published a strange book called The True Celtic Language and the Stone Cromlech of Rennes-les-Bains. It dwelt on differences in dialectic pronunciation and advanced the bizarre thesis that English was the source of the Celtic language. Boudet also wrote in it of the key to a local mystery which can be accessed by a word in a foreign language, and of 12 chests which concealed a fabulous treasure in the countryside surrounding Rennes-les-Bains. Included in this book was a map of Rennes-le-Bains and is said by some to contain a secret.
Boudet map and the original French map it was copied from
Some researchers have claimed the that the spots height of Blanchefort in the Boudet map, which is different from the more precise modern French map, were done for a reason - perhaps hinting at a code or secret Boudet embedded in the map. When comparing it with the images below, it is obvious Edmound Boudet copied the spot height directly from the old French map as he did many of its other details.
Boudet map section showing spot heights of Blanchefort and Cardou
Old French map section showing spot heights of Blanchefort and Cardou
Modern French map section showing spot heights of Blanchefort and Cardou
Blanchefort spot height - Boudet map and old French map 544 - Modern French map 476