The temple's name, 'Iwaya,' translates to 'stone dwelling,' referring to the natural caves in the cliffside.
Kobo Daishi, the founder of Shingon Buddhism, reportedly carved the statue of Fudo Myoo, the temple's principal deity, during his stay.
The main hall is built on a narrow wooden platform cantilevered over the side of the cliff.
The surrounding forest area is part of the Ishizuchi Quasi-National Park.
Visitors can see historical graffiti and inscriptions carved into the rock face by pilgrims from previous centuries.
Iwaya-ji is the 45th temple of the Shikoku 88 Temple Pilgrimage, uniquely built into the steep rock face of Mount Fudozan. The main hall is constructed directly against a massive limestone cliff, with the natural cave walls serving as a rear foundation. Accessing the temple requires a climb along a stone-paved forest path passing through dense cedar groves. The site was founded by Kobo Daishi, who is said to have practiced asceticism in these caves. The temple complex includes wooden structures perched on rocky outcrops connected by stone staircases. It is part of the designated Shikoku Pilgrimage trail, attracting both serious practitioners and hikers. The elevation provides views over the surrounding mountainous region of Ehime Prefecture.
From the base of the final stone staircase looking upward at the temple structures integrated into the cliff.
Wear sturdy hiking shoes with good traction, as the ascent involves uneven stone steps and slopes.
Bring a trekking pole if you have balance concerns, as the path is steep.
Allow extra time for the ascent if you plan to visit during rainy conditions, as the stone path becomes slippery.
Attempting the climb in formal shoes or flip-flops; ignoring the signs requesting silence in sacred areas.
Refrain from photographing the interior of the prayer halls; remain quiet and respectful of pilgrims chanting.