Iyadani-ji (弥谷寺)

Iyadani-ji is one of three reizan — spirit mountains — of Shikoku, places where the souls of the dead are traditionally felt to gather. Pilgrims climb 540 stone steps to a precinct cut into volcanic-ash bedrock, where over 1,500 carved Amida Buddhas line the rock walls and the Shishi-no-Iwaya, the Lion Cave, holds the tradition that the young Kūkai studied here as a boy.

Iyadani-ji asks more of pilgrims than most temples on the Shikoku 88, and it gives more in return. The first thing it asks is a long climb — 540 stone steps from the lower temple gate to the main hall, ascending a mountain in northern Mitoyo through cypress and cedar. The second thing it asks is a different quality of attention than other temples on the route. Iyadani-ji is regarded across Shikoku as a reizan — a spirit mountain — and is held to be one of three places where the souls of the dead come to dwell. Folk Buddhist tradition treats the mountain as a literal threshold; villagers have brought memorial slips here for generations, particularly during the Bon period, and the Cave of the Waterhole on the upper grounds is read in Shingon contemplative tradition as a mandalic entrance to Mt. Meru, the cosmic axis of the Buddhist universe. Across the rock walls of the upper precinct, more than 1,500 Amida figures have been carved into the stone, with the inscription Namu Amida Butsu attributed by tradition to the 13th-century saint Ippen. The carving tradition itself is much older. The temple's third claim on attention is biographical. Tradition places Kūkai's boyhood study here, in the Shishi-no-Iwaya — the Lion Cave — between roughly the ages of nine and twelve. The boy who would become Kōbō Daishi is said to have read by the cave window light at night, drawing on the sutra repository that Empress Kōmyō had donated. For pilgrims, this means Iyadani-ji is one of the most directly Kūkai-biographical temples on the entire route. The honzon is Senju Kannon, the Thousand-Armed Avalokiteśvara, whose many arms are read as the reach of compassion in every direction at once — appropriate to a place that holds both the dead and the living memory of a saint's youth.

Part of Shikoku Pilgrimage.

A Nara-period foundation by Gyōki under Emperor Shōmu and Empress Kōmyō, mature-form refounded by Kūkai around 807 after his boyhood study in the Lion Cave; a rock-carving tradition layering Pure Land devotion onto the older sacred-mountain and Shingon practice.

Tradition places the founding of Iyadani-ji approximately 1,300 years ago, in the early 8th century, by the priest Gyōki on the order of Emperor Shōmu (reigned 724–749). Empress Kōmyō is said to have donated a copy of the Avatamsaka Sutra to a sutra repository established on the mountain. A century later, in the boyhood of Kūkai, tradition holds that the future Kōbō Daishi (then known by his childhood name) studied in the Shishi-no-Iwaya — the Lion Cave — between roughly the ages of nine and twelve, drawing on the sutra repository for late-night reading by the cave window light. As an adult, Kūkai founded the temple's mature form on a spiritual revelation around 807. The rock-carving tradition that has so shaped the upper precinct — over 1,500 carved Amidas — is partly attributed to the 13th-century saint Ippen, though the carving tradition itself is older.

Shingon Buddhism. The temple has held this lineage continuously, with Pure Land devotional layering through the rock-carving tradition and a folk-Buddhist reizan dimension that links it to the broader Shikoku tradition of sacred mountains and ancestral souls.

A reizan — one of three spirit mountains of Shikoku — with rock-carved Amidas, Kūkai's boyhood cave, and a precinct held in the felt presence of the dead.

Iyadani-ji's thinness is dense and layered. The reizan tradition is the most particular quality. Folk Buddhism across Shikoku treats this mountain as a place where ancestral souls gather — a literal threshold rather than a metaphor — and the temple has functioned for centuries as a site of memorial practice. Pilgrims and locals alike bring slips for the dead, particularly during the Obon period in summer; the mountain's atmosphere is shaped by that continuing kuyō (memorial offering) practice. The 540 stone steps, climbing through old forest, do their own contemplative work — by the time most visitors reach the upper precinct the body has emptied of the day's small concerns. At the top the mountain itself becomes the structure. Halls are built directly onto volcanic-ash bedrock; rock walls dense with carved Amidas surround the inner precinct. The Shishi-no-Iwaya, the Lion Cave, holds the tradition of Kūkai's boyhood study and is treated with corresponding reverence. The Cave of the Waterhole is held in some Shingon interpretations as a mandalic entrance to Mt. Meru, the cosmic mountain at the centre of the Buddhist universe — turning the climb itself into a vertical mandala practice. For most pilgrims, the cumulative effect is one of the most emotionally affecting visits on the entire pilgrimage. Many describe the temple as more atmospheric than they expected, and many leave a memorial slip for someone who has died.

Traditionally founded approximately 1,300 years ago in the early 8th century by the priest Gyōki on the order of Emperor Shōmu, with Empress Kōmyō donating a copy of the Avatamsaka Sutra to a sutra repository on the mountain. From its earliest period, the site combined imperial Nara Buddhism, sacred-mountain practice, and what would become the local reizan tradition.

Tradition holds that Kūkai studied as a boy in the Shishi-no-Iwaya cave between roughly the ages of nine and twelve, and as an adult founded the temple's mature form on a spiritual revelation around 807. The rock-carving tradition, particularly the inscriptions of Namu Amida Butsu attributed to the 13th-century saint Ippen, layered Pure Land devotion onto the older Shingon and sacred-mountain practice. The temple now holds these layers together as one of the densest religious sites on the Shikoku 88.

Standard henro routine at Hondō and Daishi-dō, with the additional traditions of memorial offerings (kuyō) for the dead and silent attention at the Lion Cave behind the Daishi Hall.

Senju Kannon devotion; ancestral memorial practice (kuyō) appropriate to the reizan tradition; sutra recitation in the rock-carved areas; Daishi devotion in the cave behind the Daishi Hall.

Daily liturgy; pilgrim reception; nōkyō stamp office; ancestral memorial services arranged by the temple, particularly during the Bon period in summer.

Climb the 540 steps slowly — the climb is part of the practice and shifts the body into a different attentive state. At the Hondō and Daishi-dō, perform the standard henro rite. Stand or sit a while at the Lion Cave behind the Daishi-dō; this is among the most directly Kūkai-biographical sites on the route. If you carry a memorial intention for someone who has died, an osamefuda slip with their name is appropriate here — the reizan tradition supports the practice. Walk the rock-carved Amidas slowly enough to notice individual figures.

A 540-step stone climb under forest, halls cut into volcanic bedrock, rock walls of carved Buddhas, the Lion Cave behind the Daishi Hall, and the unmistakable atmosphere of a place that holds the dead.

Pilgrims approach Iyadani-ji from the Mitoyo plain after a roughly 12-kilometre walk from Motoyama-ji at Temple 70 — much of it gentle, until the final ascent. A parking area and a lower temple gate sit at the foot of the mountain. From there the work begins. The 540 stone steps climb through cypress and cedar in a long series of pauses; older henro and pilgrims with mobility limitations should know that wheelchair and step-free access to the upper precinct is not feasible. The climb is part of the practice. Bodies tire honestly. By the time the upper grounds open, the day's surface noise has fallen away. The first impression at the top is of the rock itself. Halls and shrines are built directly onto volcanic-ash bedrock. The walls of the inner precinct are dense with carved Amida Buddhas — over 1,500 figures across the stone, many bearing the inscription Namu Amida Butsu. Some are sharply legible, others worn nearly smooth by weather. Pilgrims walk slowly here. At the Hondō: candle from one's own flame, three sticks of incense, osamefuda, coin, Heart Sutra. The honzon inside is Senju Kannon. At the Daishi-dō, the rite continues with the Kōbō Daishi mantra. Behind the Daishi-dō, the cave deepens into the mountain — the Shishi-no-Iwaya tradition, the place where the young Kūkai is said to have studied. Many pilgrims spend extra silence here. Many also add a memorial slip for a person they have lost — the reizan character of the temple makes this gesture particularly fitting. After the halls, the Cave of the Waterhole on the upper grounds is read in Shingon as an entrance to Mt. Meru. Pilgrims who attend to the climb as part of the practice sometimes describe the descent afterwards as feeling lighter — as if something has been left on the mountain.

Park or arrive at the lower temple gate. Climb the 540 stone steps slowly, allowing the body to settle into the rhythm of the ascent. At the upper precinct, bow at the gate. Wash hands at the chōzuya. Approach the Hondō: light a candle from your own flame, three sticks of incense, osamefuda, small coin, Heart Sutra. Move to the Daishi-dō and repeat with the Kōbō Daishi mantra. Behind the Daishi-dō, the Shishi-no-Iwaya cave is open to respectful approach; pause there in silence. If carrying a memorial intention for someone who has died, this is an appropriate temple at which to leave a slip — the reizan tradition supports the practice. Visit the rock-carved Amidas slowly. Receive your stamp at the nōkyō office before 17:00.

Iyadani-ji can be read through the layered lenses of mountain-Buddhism, Pure Land devotion, Shingon esotericism, and folk reizan tradition — and these readings are not separate, they have grown into one another at this site over more than a thousand years.

Iyadani-ji is one of the best-documented examples on the pilgrimage of the layering of sangaku-shinkō (mountain-Buddhism), Pure Land practice (the rock-carved Amidas and the Ippen attribution), and Shingon esotericism. Kūkai's documented boyhood study at Shishi-no-Iwaya is widely accepted in the tradition, with the precise dates remaining traditional rather than dated. How early the rock-carving tradition began is not archaeologically resolved.

The temple is widely regarded across Shikoku as a reizan where the dead linger; villagers traditionally bring memorial slips here as part of Bon-period observances. The continuing kuyō practice and the temple's quiet support of memorial offerings make this one of the most directly folk-Buddhist sites on the pilgrimage.

The Cave of the Waterhole is read in some Shingon interpretations as a mandalic entrance to the cosmic mountain Sumeru — turning the climb itself into a vertical mandala practice in which the pilgrim's body becomes the practitioner-figure on the cosmic axis.

How early the rock-carving tradition began is not archaeologically established; claims of 13th-century Ippen authorship for the carved Namu Amida Butsu are traditional rather than dated. How much of the cave shaping is natural versus humanly enhanced is not publicly resolved.

On a mountain in northern Mitoyo, Kagawa. 540 stone steps from the lower gate to the upper precinct. About 12 km on foot from Motoyama-ji. Nōkyō office 7:00–17:00.

On a mountain in northern Mitoyo, Kagawa. Reached via stone steps from a parking area or the lower temple gate; the climb to the main hall is approximately 540 steps. By foot from Temple 70 Motoyama-ji it is roughly 12 km, much of it gentle until the final ascent. Wheelchair and step-free access to the upper precinct is not feasible.

Pilgrim inns and minshuku in the Zentsuji and Mitoyo areas; some walking pilgrims overnight before the Iyadani-ji climb. Confirm specifics through the official Shikoku 88 pilgrim office or local tourism authority.

Iyadani-ji is regarded in Shikoku folk tradition as a site for the souls of the dead. The 1,500+ rock carvings of Amida and the sacred caves are devotional, not decorative.

Iyadani-ji asks for a particular quality of restraint. Bow at the gate. Wash hands at the chōzuya. Set down kongō-zue staffs at the hall steps. The mountain's reizan character means that voices should stay low throughout the climb and the upper precinct, especially around the rock-carved areas and the Lion Cave. Photography of the carved rock faces and pagoda is generally permitted; photography of the Lion Cave and shrines should be respectful — quick, unobtrusive, never with flash — and never inside the Daishi-dō or the Hondō. If you find other pilgrims engaged in memorial practice, give them space. The 540 stone steps may be challenging; pace yourself, rest at landings, and allow others to pass.

Sturdy walking shoes are essential for the steps; modest clothing; layers in cooler months. Traditional henro whites — hakui, sedge hat, kongō-zue, juzu — welcomed but not required.

Outdoor photography of the carved rock faces, halls, and pagoda is generally permitted. Photograph the Lion Cave and shrine areas respectfully and never inside the Daishi-dō or Hondō. No flash near the rock carvings; no posed photography on the steps.

One candle (lit from your own flame), three sticks of incense, an osamefuda slip, and a small coin offering at each of the Hondō and the Daishi-dō. Many pilgrims add a memorial slip for the dead given the reizan character of the site.

Do not deface, touch, or rub the rock carvings. Do not enter restricted cave areas. The stamp office stops issuing at 17:00. Wheelchair and mobility access to the upper precinct is limited because of the stone-step approach.

Nearby sacred places create the location cluster described in the growth plan. This block is intentionally crawlable and links into the wider regional graph.

Mandara-ji (曼荼羅寺)

Zentsūji, Zentsūji, Kagawa, Japan

2.5 km away

Shusshakaji (出釈迦寺)

Zentsūji, Zentsūji, Kagawa, Japan

2.7 km away

Kōyama-ji (甲山寺)

Zentsūji, Zentsūji, Kagawa, Japan

3.8 km away

Zentsū-ji (善通寺)

Zentsūji, Zentsūji, Kagawa, Japan

4.6 km away