Treasure Revealers (gter ston) are men and women who have produced scripture or objects known as treasure (gter ma) through visionary experience, memory, or physical extraction. Generally these treasures are said to have been concealed by an earlier historical figure, with the intention that they would be recovered for use by future generations. Although most common in the Nyingma and Bon traditions, there have been treasure revealers in all traditions of Tibetan religion.