Iyadani-ji è associato a Gyoki e le sue origini risalgono all'inizio dell'VIII secolo.

You must climb 540 stone steps total to reach the main hall: 400 steps from the entrance gate, then another 140 steps through scattered rock-carved Buddha statues embedded into the mountainside.

Iyadani-ji è il Tempio n. 71 del Pellegrinaggio di Shikoku di 88 luoghi sacri.

The temple was founded around 724 AD, making it 50 to 100 years older than Kōbō Daishi himself, who was born in 774. The original purpose was to heal Empress Kōmyō's illness.