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Chubu-Sangaku NP, Toyama
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On Oyama’s east face, Gozenzawa’s snow hides a real glacier: radar found ice up to 27 m thick, and GPS showed it moving about 10 cm a month. That slow creep distinguishes glacier ice from old snow.
Oyama’s shrine-topped summit is 3,003 m, but Tateyama’s highest point is nearby Ōnanjiyama at 3,015 m. “Tateyama” names a 3-peak ridge; Oyama is its celebrated spiritual summit.
At Oyama’s summit shrine, a climb can end with more than a view: worshippers receive a priest’s purification and sacred sake at Mine-honsha, the high-altitude heart of Tateyama worship.
Until the ban on women climbing Tateyama ended in 1872, women at Ashikuraji village below Oyama held Nunobashi Kanjōe: blindfolded, they crossed a white-draped bridge in a rite symbolizing death and rebirth.
Tateyama’s opening legend tells of 16-year-old Saeki no Ariyori following a white hawk, shooting a bear, then finding Amida Buddha in a cave. Shrine tradition dates his mountain-opening mission to 701.
A climb up Oyama once marked adulthood for boys in Etchū: historical accounts place the rite around ages 15–18. When schools later organized group ascents, the old coming-of-age journey lived on as school hikes.
At the height of Tateyama worship in the Edo period, as many as 6,000 pilgrims reportedly climbed in one summer. Guides led them from foothill temple lodgings on multi-day journeys to the sacred mountain.
Ashikuraji monks carried painted Tateyama mandalas on preaching trips across Japan, using the scrolls to explain the mountain’s hells, paradises and pilgrimage routes. 53 versions are known—and no 2 are alike.
Oyama’s summit shrine belongs to a single 3-site institution: Mine-honsha on the peak, a prayer sanctuary in Ashikuraji, and a foothill shrine at Iwakuraji. The lower shrine kept annual rites going when winter snow made the summit hard to reach.
The old pilgrimage road from Iwakuraji toward Oyama once carried 33 stone Kannon figures, echoing Japan’s 33 sacred Kannon sites; 26 still survive. Donor names and many 1811 dates record contributions from worshippers far away.
