Ryoan-ji Temple (The Temple of the Peaceful Dragon) is a Zen temple located in northwest Kyoto. The temple grounds covers about 120 acre's including the scenic mountains. Kyoyochi Pond-Oshidoriike, is famous along with Osawanoike in Daikakuji Temple from the Heian period (794-1192). The two ancient ponds were a well-known habitat for mandarin ducks until the end of the Meiji period (about 1900). The rock garden consists of 15 rocks expertly laid out into a bed of white gravel. The rock garden express's spiritual enlightenment of Zen Satori, and tell of infinite teachings.