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Hidakasanmyaku Erimo Tokachi NP, Hokkaido
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Erimo’s bare cape was nicknamed “Erimo Desert.” Starting in 1953, crews tucked grass seed under washed-up seaweed to stop the wind scattering it. The restored coastal forest helped improve marine habitat and fisheries.
At 245,668 hectares, this is Japan’s largest national park by land area. Its Hidaka mountain spine runs about 140 km, from 2,052-m Mount Poroshiri to the cliffs, terraces and reefs of Cape Erimo.
Separate from the main ridge, Mount Apoi is only 810 m high yet has about 80 alpine-plant species and nearly 20 endemic forms. Its unusual peridotite ground and harsh weather help create this botanical surprise.
The spotted seals at Cape Erimo use the same reefs year-round, and the cape is Japan’s largest seal habitat and breeding ground. Their recovery brought a new challenge too: growing numbers now conflict with local fishing.
Along the Hidaka coast, fishermen watch the weather before a raised flag signals the day’s kelp harvest. Families dry the catch on gravel that same day; long kelp is then cut to 105 cm and bundled in 20-kg lots.
At Cape Erimo, the mountain-to-sea story continues underwater: local descriptions say the reefs reach about 2 km offshore and continue another 6 km below the surface. Marine surveys also trace Hidaka’s geological structure offshore.
Plate collision helped build the Hidaka range—and pushed up a slice of Earth’s crust, exposing rocks formed at different depths. At Mount Apoi, fresh peridotite from the upper mantle reaches the surface.
The Hidaka ridges carry traces of ancient glaciers: ice carved bowl-shaped cirques, sharp horns and knife-edge ridges. The Seven Lakes Cirque near Mount Poroshiri is one striking example of this high-country sculpture.
The park protects Japan’s largest pristine watershed: mountain river headwaters without artificial structures. From these unusually wild sources, water flows through forested foothills toward the Pacific coast.
The cape’s Ainu name, Onne-enrum, means “great cape” in the Hokkaido prefecture’s account. It is part of Pirika no ka, a group of scenic places important in Ainu stories and prayer; Ainu reef names are still used for kelp-fishing places.
A town heritage account citing an old travel record says kelp on Erimo’s reefs was called “the gods’ beard” and left unharvested. People passing offshore offered inau and sake while praying for a safe voyage.
In 1798, explorer Kondō Jūzō and local Ainu cut a 12-km path along this rugged coast, described as Ezo’s first road-building. The modern 33-km “Golden Road” took 7 years to build and opened in 1934.
Cape residents preserve Erimo Kagura, a lion dance traditionally performed to pray for safe passage and good catches. Town records link its local shrine tradition to 1814; the dance is still performed at the autumn festival.
At Cape Erimo, winds of at least 10 m/s blow on more than 260 days a year. The local Wind Museum lets visitors feel a controlled 25-m/s gust indoors—a memorable way to meet this famously windy landscape.
Cape Erimo’s lighthouse first shone in 1889, but an air raid destroyed it on July 15, 1945. It was rebuilt in 1950; today its light can reach about 41 km across waters known for sea fog.
Beside the cape lookout stand monuments to 2 different songs titled “Erimo Misaki”: Chiyoko Shimakura’s and Shinichi Mori’s. The second was erected after Mori visited in 1997.
A local cape legend tells of an Ainu man who saw an 11-faced Kannon riding a white mouse on the reefs. The story says a statue later washed ashore, and sailors prayed to it when storms threatened.
