The "secrets" aren't hidden in a forbidden PDF. They are hidden in applying the four principles above. Master those, and you will understand geomancy better than 90% of people who just download a PDF and glance at the figures.
Most people think the 16 geomantic figures (like Via , Populus , Rubeus ) are static symbols like Tarot cards. Each figure is the snapshot of a process —specifically, the interaction of the four classical elements. les secrets de la geomancie pdf
Populating the 15 houses of the geomantic shield. 5. Advanced Interpretations The "secrets" aren't hidden in a forbidden PDF