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Chubu-Sangaku NP, Toyama
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Tateyama’s main ridge is a trio of peaks, not one summit. Onanji is the highest at 3,015 m—12 m above Oyama, whose summit shrine often makes it feel like the top.
For 136 years, a temporary shrine on Onanji housed the sacred object from Oyama Shrine’s summit sanctuary. On July 10, 1996, a procession carried it back to the rebuilt shrine, with conch shells and drums sounding across the peaks.
Onanji’s summit once had a shrine. A 1666 map labels the peak “御内陳,” and a 1700 map calls it “大汝”; old records say stonework, post bases and old nails remain at the shrine site. A classic compendium called it “Hakusan Gongen-dō.”
The 2014 film Haru o Seotte (Climbing to Spring) used the Onanji Rest Hut as its fictional mountain hut. Stars Kenichi Matsuyama and Yu Aoi made the climb to 3,015 m 5 times during filming.
A government-hosted environmental study noted a snowdrift about 5 m deep behind the Onanji Rest Hut in early July. The 3,000 m site had no grid electricity and could use rainwater for its water supply.
