Mount Nagi (Nagisan)

Mount Nagi (那岐山, Nagi-san), 1,255 metres high, rises on the border between Nagi Town in Okayama and Chizu in Tottori Prefecture. It is the centrepiece of the Hyonosen-Ushiroyama-Nagisan Quasi-National Park and one of the peaks on the popular 'Chugoku Hyakumeizan' lists, making it a beloved training and day-hiking mountain for people across western Japan.

The reward at the top is a broad, grassy summit almost free of trees, so the view opens a full 360 degrees. To the south you look down on the tidy patchwork of Nagi's rice fields and the ridgelines of the Chugoku Mountains rolling toward the Seto Inland Sea. To the north, on genuinely clear days, the land falls away toward Tottori and you can catch the glint of the Sea of Japan. Neighbouring peaks Takiyama and Hirotozen extend the ridge to the east.

The mountain has long been treated as sacred; Nagizen Shrine sits at its foot, and the name appears in old records of the region. Today it is prized less for legend than for accessibility of a serious kind: a real mountain that a reasonably fit walker can summit and return from in a single morning, which is why its trails are busy on autumn weekends.

Expect an honest hike, not a viewpoint you drive to. From the Nagi-no-Yama trailhead car park, well-marked A, B and C courses climb through cedar and beech forest; the classic loop ascends the steeper B course past small waterfalls and descends the gentler C-course ridge, taking roughly 2.5 to 3.5 hours round trip. The path is steep and root-laced in places, so proper footwear and water are essential, and the exposed summit can be cold and windy even when the valley is warm.

The finest window is autumn, from late October into mid-November, when the beech and maple turn and the silver susuki grass on the upper slopes catches the low sun. Crisp, high-pressure mornings after rain give the clearest air and the best chance of seeing all the way to the Sea of Japan. Early summer is lush and green, while winter can bring snow and rime ice for experienced, well-equipped walkers only.

Getting there realistically means a car. There is no bus to the trailhead; drivers usually come off the Chugoku Expressway at Sakuto IC and follow signs about 30 minutes to the Nagizen Shrine area and the trailhead parking. Travelling by train, the JR Inbi Line stops at little Nagi Station, but it is an unmanned rural line with no IC-card readers and the station is still around 10 km from the trailhead, so you will need a taxi or rental car for the last stretch. Restrooms are available at the trailhead but not on the mountain, so plan accordingly before you set off.