Sacred Stone Puzzles are found on Yashiori Island in Inazuma. They contain Sacred Stone Mounds and Thunderbearer Mirrors. All Sacred Stone Puzzles are part of the Orobashi's Legacy Quest Series and can only be completed when the corresponding quest is unlocked.
When a Sacred Stone Mound is attacked, it will fire an electrical current in the direction it is facing. Sacred Stone Mounds are pillars with a semicircle at the top.
When a Thunderbearer Mirror receives electric current fired from the Sacred Stone Mound, it will redirect it in the direction it is facing. Thunderbearer Mirrors are pillars with a full circle at the top and a semicircle perpendicular to the full circle.
Both Sacred Stone Mounds and Thunderbearer Mirrors can be adjusted to change their direction and elevation angle to direct the current in a specific direction. All of the Thunderbearer Mirrors need to be used to solve the puzzle.
The following quests feature Sacred Stone Puzzles that are only solvable once the relevant steps in the quests are reached:
- Orobashi's Legacy: Part I (between Fort Fujitou and Musoujin Gorge)
- Orobashi's Legacy: Part II (between Higi Village and Serpent's Head)
- Orobashi's Legacy: Part III (Jakotsu Mine)
- Orobashi's Legacy: Part V (Fort Mumei)