Ōgamiyama Shrine — 大神山神社

Ōgamiyama Shrine possesses the longest shrine corridor in Japan — a stone-paved path extending 700 metres through ancient cedar forest on the sacred slopes of Mount Daisen. The shrine exists in two locations: a main shrine (honja) in Yonago City and an inner shrine (okumiya) halfway up the mountain at 900 metres elevation. What makes this corridor extraordinary is not merely its length but its construction: natural stones laid without mortar, each one placed by hand over centuries, creating a path that seems to grow from the mountain itself. Walking it in early morning mist, when moisture beads on moss-covered rocks, is to understand why mountains were Japan’s first shrines.

Mount Daisen has been a sacred peak since the Yayoi period, but formal shrine worship was established in 713 CE during the Nara period. For over a millennium, Daisen functioned as a syncretic mountain — simultaneously Buddhist temple and Shinto shrine under the shinbutsu-shūgō system. The mountain was called Daisenji, and the shrine was administered by Buddhist monks who practiced shugendō mountain asceticism. The Meiji government’s forced separation of Shinto and Buddhism in 1868 split the complex: the Buddhist structures became Daisenji Temple, while the Shinto elements reorganized as Ōgamiyama Shrine. The okumiya occupies what was once the Buddhist main hall, a massive structure that still bears architectural traces of its dual heritage.

Ōnamuchi no Mikoto (大己貴命) is the primary deity, better known by his alternative name Ōkuninushi — the great land-ruling kami who appears throughout the Kojiki as builder of the nation and master of the unseen realm. At Ōgamiyama, he is specifically venerated as the kami of Mount Daisen itself, making this one of the rare shrines where Ōkuninushi is worshipped in mountain form rather than at his main seat in Izumo. The shrine also enshrines Ōnaka-tsu-hime no Mikoto, one of the daughters of the ocean deity Watatsumi, who became Ōkuninushi’s wife in mythology. This pairing connects the mountain’s power to both land and sea.

The shrine’s founding legend tells of a divine manifestation rather than human establishment. In 713 CE, the mountain itself is said to have emitted golden light visible across the Sanin region for seven days. When monks and officials climbed to investigate, they found the peak wreathed in clouds shaped like a great shrine building. Taking this as a divine sign, they built the first shrine structure on that spot. A second legend explains the mountain’s alternative name, Hōki Fuji (the Fuji of Hōki Province): the kami of Mount Fuji and Mount Daisen once competed for supremacy, and Daisen won by demonstrating that water flows from its peak even in winter, while Fuji remains frozen. The tale preserves local pride in a mountain that, at 1,729 metres, dominates the western Chūgoku skyline as Fuji dominates the east.

The okumiya main hall is one of the largest shrine structures in Japan, measuring 36 metres wide — a scale reflecting its former Buddhist identity. The building employs gongen-zukuri style, where worship hall and main sanctuary connect under a single roof, and its massive thatched roof required rethatching with miscanthus grass every fifty years until modern materials replaced it. The 700-metre stone approach is bordered by towering cedar trees, some over 500 years old, and passes several smaller shrines and sacred rocks believed to be dwelling places of mountain kami. The honja in Yonago, rebuilt in 1666, features a more conventional nagare-zukuri design but houses the shrine’s most important ritual objects. Between the two shrine buildings lies the mountain itself, off-limits to casual hikers during certain sacred periods.

• Ōmiya Matsuri (Great Shrine Festival) — May 24th annually, featuring processions from both the honja and okumiya that meet at a sacred midpoint on the mountain path, symbolizing the unity of the shrine’s dual structure
• Daisen Summer Festival — July 14-15, when pilgrims climb the stone corridor by lantern light to pray at the okumiya for protection from summer disasters and agricultural success
• Oyama-san’ya Festival — October 24-26, harvest thanksgiving ceremonies that include offerings of the season’s first rice and sacred kagura dance performances
• Winter Closure — The okumiya officially closes from November through April due to heavy snowfall, though determined winter pilgrims still make the journey

October offers ideal conditions: the summer crowds have dispersed, autumn colour ignites the cedar forest in gold and crimson, and the mountain reveals itself clearly before winter snowfall. The okumiya is accessible from May through early November, but June brings the best light — diffuse sun filtering through fresh green leaves onto wet stone. Avoid weekends during autumn foliage season when the narrow corridor becomes congested. Early morning visits, starting the climb at dawn, offer solitude and the possibility of seeing cloud seas filling the valleys below Daisen. The honja in Yonago remains open year-round and provides a winter alternative when the mountain shrine is inaccessible.