The Kyber Mirrors, also known as the Reflection caverns, or as the reflection mirrors, were an attraction under the Dome of Deliverance in the Hall of Reflection on Jedha. They were opened by the Priests of Phirma only on Reflection Day. It was said that the mirrors could show you a glimpse of your future path, to better understand what the Force might have in store.
There were three mirrors, which were sheets made of polished kyber that sprouted from the ground like huge spearheads. The mirrors were covered in a dull, speckled patina and shone with an inner glow. All mirrors had a small wooden platform before them for the pilgrims to stand on.