Since ancient times, people in Japan have felt a profound veneration for the bedrock of their land. Quarried and mined, this rock has been skillfully used to create the stone walls of castles and buildings. It is also the base material for statues carved as an expression of religious faith. And in some places, there is a strong belief in the spiritual power of those forms in stone. On this episode of Journeys in Japan, we travel to 4 sites — in Okayama, Tochigi, Oita and Aomori Prefectures — to discover this deep, mysterious relationship.