岩座神社・山住神社（Iwakura Jinja Shrine・Yamazumi Jinja Shrine）：古代の祭祀形態である磐座信仰が残る

10世紀に岩座神社は山住神社から遷座。山住神社の創建は、少なくとも9世紀以前。 平安京造営時に桓武天皇は、四神相応の結界と共に、仏教の法力によって鎮護を行う仕掛けとして、京都の東西南北にある磐座、４つの岩倉に仏典を納めたとされる。 そのうちの北の岩倉に当たるのが岩座神社・山住神社であり、縄文時代からの祭祀形態である磐座信仰が今に残る。 Iwakura Shrine was relocated from Yamazumi Shrine in the 10th century; Yamazumi Shrine itself dates back at least to the 9th century or earlier. It is said that when the capital of Heian-kyo was being constructed, Emperor Kanmu—in addition to establishing a protective boundary based on the concept of the "Four Divine Beasts" (*shishin so-o*)—placed Buddhist scriptures within four iwakura (sacred rock sites) located to the north, south, east, and west of the city, as a means of providing spiritual protection through the power of Buddhism. Iwakura Shrine and Yamazumi Shrine correspond to the northern iwakura site, and they preserve the tradition of iwakura worship—a form of ritual practice that dates back to the Jomon period.