Overview
Fudo-in Iwaya-do is a temple hall linked to Shugendo mountain asceticism, located in the town of Wakasa in Yazu District, Tottori Prefecture, and designated an Important Cultural Property of Japan. Set beside the Yoshikawa River, a tributary of the Hatto River, the hall is built in the kakezukuri style, fitted into a natural rock cavern so that it seems fused with the cliff. It is counted among the Three Great Nageire-do (thrown-in halls) of Japan, alongside the famous Nageire-do of Sanbutsu-ji on Mount Mitoku.
Highlights
- ●A kakezukuri hall fitted into a natural rock cavern
- ●Counted among Japan's three great Nageire-do halls
- ●A place of faith enshrining a Fudo Myoo said to be carved by Kukai at 33
- ●A distinctive roofline of hip-and-gable and gable forms with tochibuki shingles
History
The hall is said to trace its origins to around the year 806, carrying a long history of faith. It is fitted into a natural cavern roughly 13 meters high, 7 meters wide, and 10 meters deep, assembled in the kakezukuri technique in which long pillars support the structure from below. Its front uses an irimoya (hip-and-gable) roof and its rear a kirizuma (gable) roof, finished with tochibuki shingles, giving it a distinctive design suited to a place of mountain worship. The principal image is a black-skinned Fudo Myoo said to have been carved by Kukai at age 33, and it is also named as one of Japan's three great Fudo Myoo images, together with those of Meguro Fudo and Meaka Fudo.
Access
The temple is in the town of Wakasa, Yazu District, Tottori Prefecture (around 35.30°N, 134.43°E), set among the hills along the Yoshikawa River, a tributary of the Hatto River. As the route leads into mountain country, visiting by car is convenient; if you use public transport, check the nearest station and bus routes in advance. Because visiting hours and access to the hall's interior may change, please confirm the latest details through official sources before your visit.
Best season
The season of fresh greenery along the mountain stream, and the autumn when the hillsides turn color, offer especially fine views in which the kakezukuri hall and nature blend together. Footing in the hills can be slippery, so comfortable shoes and preparation for the weather will let you worship with peace of mind.
Map
35.3004, 134.4304 · Wikidata
Suggested itinerary
- 1Head to Iwaya-do from the approach along the Yoshikawa River in Wakasa
- 2Look up at the kakezukuri hall set into the cavern from the front
- 3Observe details such as the lattice windows and giboshu railings
- 4Reflect on the history of faith tied to the black-skinned Fudo Myoo
Did you know?
💡 Details such as the flower-shaped lattice windows and the giboshu-topped railings carry the mood of a Shugendo temple standing in a sacred mountain setting. As one of Japan's three great Nageire-do, alongside the Nageire-do of Sanbutsu-ji on Mount Mitoku and the Okunoin Raido of Ryugan-ji in Oita, and as a building chosen among the prefecture's Top 100 Buildings, it is cherished by many.
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