Iwakura
Another rock-related object in Shinto is called Iwasaka, which is believed to be a ritual site that centers on a rock. However, compared to Iwaza, there is little evidence of its existence. The Nihonshoki (Chronicles of Japan) distinguishes Iwasaka from Iwaza, suggesting that it is a distinct object. Additionally, a banjiki is similar to a stone circle and serves as a boundary that marks the divine realm and preserves the sacredness of the site.