The is the Nindō that exists symbolically in the monument. Similar to Konoha's Will of Fire, the Iwa shinobi live their lives by this great principle. The First Tsuchikage told a young Ōnoki that the stone holds no true significance to the monument, even going as far as simply throwing it back into the pool with the other stones and replacing it with another random stone. He uses these stones to demonstrate how essential the strong will of the shinobi is to Iwagakure.