Press Square next to three lit Qactuar stones, then follow the ghost of the Qactuar to the fourth pillar on the right of Thunder Plains South. Examine this pillar and the chest will appear. You'll need the Celestial Mirror to open it.
Press Square next to three lit Qactuar stones, then follow the ghost of the Qactuar to the fourth pillar on the right of Thunder Plains South. Examine this pillar and the chest will appear. You'll need the Celestial Mirror to open it.