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Yoshino Kumano NP, Nara / Mie
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Local folklore makes the bull-shaped Ushiiwa stone a prison for spirits; one-legged Ippon-datara was allowed out just once a year, on the old lunar 12/20. Another village saying promises rain if you tap the stone.
Kamikitayama’s izasa-zushi wraps salmon and rice in a bamboo leaf, inspired by the sasa on Odaigahara. Its name comes from Izasa-ō, a legendary giant boar deity said to be wrapped in bamboo.
At 68, explorer Matsuura Takeshirō began climbing Odaigahara, making 3 expeditions in 3 years and paying for trail markers and huts. He also asked for part of his ashes to be laid to rest in West Odaigahara.
Odaigahara receives about 3,000–3,500 mm of rain a year. Moist air rises from the Kumano Sea, only about 20 km away, then cools as it climbs the steep slope—making cloud and rain especially likely.
Odaigahara is a three-way divide: its rivers feed the Miyagawa, Kumano and Yoshino river systems, carrying water respectively toward Ise Bay, the Kumano Sea and the Kii Channel.
Odaigahara is a rare Japanese example of a non-volcanic uplifted peneplain: an ancient, gently worn surface was raised into the mountains. Its level upland ends in dramatic cliffs carved by erosion.
Ascetic Furukawa Takashi spent about 100 days alone on Odaigahara, then returned to stay 3 months through winter. He founded Odaigahara Church, completed in 1899, and helped observe the weather and host climbers.
In Odaigahara folklore, Hidarugami could make a traveler suddenly weak. The traditional remedy was a grain of rice, while leaving one bite of lunch as an offering was said to help keep the spirit away.
The Odaigahara salamander breeds here, but its range extends only across parts of the Kii Peninsula. Nara, Wakayama and Mie each protect it as a natural monument.
The open, bamboo-covered slopes around Masaki Pass have a backstory: the 1959 Ise-Wan Typhoon toppled trees, opening the canopy and drying the mossy ground. Dwarf bamboo spread, while deer browsing made forest renewal harder.
In 1916, botanist Mitsutarō Shirai spoke out about the importance of Odaigahara’s native forest as a paper company logged there—an early forest-conservation campaign. Local forester Hideo Kishida later helped lead the push for park status.
Near Nanatsu-ike, deer-exclusion fences built in 2007 and 2021 stand close together. Their different ages let visitors compare how vegetation changes when deer are kept out for longer.
Researchers comparing Odaigahara stream surveys from 1983 and 2006 found fewer bottom-dwelling animals and genera overall. The streams’ once-distinct communities had also become more alike.
