The phoenix-named ridge of the Southern Alps
Mt. Hōō Sanzan ('Three Mountains of the Phoenix') is a granite three-peak ridge at the north-east corner of the Southern Japan Alps (Akaishi Range), straddling Minami-Alps City, Nirasaki City and Hokuto City in Yamanashi Prefecture. The three peaks are Mt. Kannon (2,841 m, the highest), Mt. Yakushi (2,780 m) and Mt. Jizō (2,764 m). Fukada Kyūya's 100 Famous Mountains list treats all three as a single entry under the name 'Mt. Hōō.' Standing across the Noro River from the higher peaks of the Shirane Sanzan (Kita-, Aino-, Notori-dake), Hōō Sanzan is widely regarded as the finest viewpoint for seeing the rest of the Southern Alps from outside the main spine.
The name 'phoenix' (鳳凰) comes from a 30-metre granite spire that rises from the summit of Mt. Jizō, called the Obelisk (Jizō-butsu), whose form has long suggested a phoenix in flight. The entire three-peak ridge is built of Cenozoic granite, and the ridge crest above 2,700 m is paved in weathered white sand — a coarse granite gravel that gives the upper ridge an almost beach-like appearance. The contrast against the dark green forests of the rest of the Southern Alps is the visual signature of Hōō Sanzan.
Four routes into a three-peak traverse
Hōō Sanzan is most often climbed as a two-day traverse, entering from one trailhead and exiting another. The Yashajin Pass route (1,380 m trailhead) is the standard ascent: a 7-hour climb through gentle forest and a long ridge over Tsuetate-tōge and Ichigo-daira to Minami-Omuro hut, with Mt. Yakushi just beyond. The Dondoko-sawa route from Aoki-kōsen onsen (1,080 m) is the shortest and most dramatic, climbing alongside a chain of waterfalls — Minami-Shōji, Hōō and Goshiki — to Hōō Hut and Mt. Jizō in 6 hours. This is also the historical route: Fukada Kyūya himself climbed this way in autumn 1932 before writing the mountain into the 100 Famous Mountains list.
The most common loop is Dondoko-sawa up, Naka-michi down — ascending via the waterfall route to Hōō Hut, traversing Jizō → Kannon → Yakushi along the white-sand ridge, and descending the Naka-michi trail back to Aoki-kōsen. The fourth approach, Goza-ishi-kōsen route from the north via Mt. Tsubakuro-atama (7h30 to Jizō), is older and quieter, favoured by experienced hikers who want solitude on the climb.
Access from Tokyo and Nagoya
From Tokyo, the Chūō Line Limited Express reaches Kōfu Station in about 90 minutes; from Kōfu, the Yamanashi Kōtsū bus to Yashajin Pass takes 80 minutes (via Ashiyasu Onsen). Aoki-kōsen is accessible from JR Nirasaki Station by reserved shared taxi in about an hour. Leaving Shinjuku at 5 a.m. puts you on the trail by 9 a.m. — accessible by Southern Alps standards. From Nagoya, the route via Kōfu adds about an hour.
Unlike Hirogawara (the access point for Mt. Kita), Yashajin Pass and Aoki-kōsen both allow private vehicle access year-round. The free lot at Yashajin Pass holds about 100 cars and fills before 5 a.m. on autumn weekends; Aoki-kōsen has paid parking for around 200 vehicles. Among the Southern Alps 100 Famous Mountains, Hōō Sanzan has the most flexible access logistics — a meaningful advantage when planning an early start.
The white-sand ridge and what you actually see
The signature white-sand ridge runs about 1.5 km from Mt. Yakushi to Mt. Kannon. Weathered granite gravel covers the entire crest, so bright in sunlight that you'll squint without sunglasses. It is the only stretch in the Southern Japan Alps where the ridge looks like a beach — most other peaks in the range are dark forest and slate-grey rock.
From Mt. Kannon's summit, the view is staggering. North: the Shirane Sanzan (Kita-dake 3,193 m, Aino-dake 3,190 m, Notori-dake 3,026 m) rise in a single immense wall, with the granite spire of Kaikoma to their right. East: the Yatsugatake range across the Kōfu basin. South: the main ridge of the Southern Alps stretches away to Shiomi-dake, Arakawa-dake, Akaishi-dake. West: the Central Alps, Mt. Ontake, Mt. Norikura. And to the south-east, Mt. Fuji floats above the Kōfu valley. Mt. Kannon is widely considered the best Japan-Alps overview point you can reach without entering the main Southern Alps ridge.
The Obelisk: do you climb it
The granite spire on Mt. Jizō's summit — the Obelisk — rises about 30 m vertically from the surrounding ridge. Most hikers reach the base of the Obelisk by the regular trail and stop there. Reaching the actual top requires real rock-climbing skills, and unprotected ascents are dangerous even for experienced climbers. The trade-off is intentional: the base is sacred ground, dotted with small Jizō statues from centuries of mountain worship, and the act of arriving at the base — with the spire vertical overhead and the entire Shirane Sanzan filling the view to the north — is the canonical Hōō Sanzan experience. The photograph of the Obelisk base looking toward Mt. Kaikoma and Mt. Kita is the most-published image associated with the range.
Hōō Hut, Yakushi-dake-goya, Minami-Omuro
Three huts support the traverse. Hōō-goya (2,382 m, just below Mt. Jizō) is the oldest and largest, sleeping about 100 climbers, open mid-July through mid-October. Yakushi-dake-goya (2,720 m, directly below Mt. Yakushi's summit) is favoured by climbers starting from Yashajin Pass. Minami-Omuro-goya (2,440 m, midway on the Yashajin route) offers a tent site, rare on this ridge. Reservations are required and slots fill weeks ahead in foliage season; check current operating windows before each trip.
What to bring
Equipment is standard Japan Alps overnight kit: mid-cut or higher hiking boots, a 30–40 L pack, long-sleeve base, fleece, breathable rain shell, beanie and light gloves. Sunglasses and high-SPF sunscreen are non-optional on the white-sand ridge — reflected glare is much higher than on dark-rock ridges, and sunburn from the granite ridge in midsummer is a documented problem. Standard climbing season is mid-July through mid-October. Late July to early August brings the alpine flowers (Takane-biranji, Hakusan-shakunage) into bloom on the upper ridge. Early October foliage on the lower forest pairs with the first dusting of snow on Mt. Fuji from the summit ridge. November to early June is a serious winter mountain — Hōō Sanzan in winter is technically demanding and not a beginner objective.
Fukada Kyūya climbed Hōō in autumn 1932 via the Dondoko-sawa route — Aoki-kōsen up the waterfalls to Hōō Hut, then traversed to Yakushi and descended. In his 100 Famous Mountains chapter on Hōō-san, he wrote that the moment he looked up at the Jizō Obelisk from its base, the name 'phoenix' suddenly made sense. The reason the three peaks are listed together as a single 'Mt. Hōō' rather than as three separate entries traces directly to that experience: Fukada chose the trio because the Obelisk alone justified the name.
What's next in the Southern Alps
From Hōō Sanzan, the most natural next objective is one of the higher peaks you spent the climb staring at. Mt. Kaikoma (2,967 m) sits just north across the Noro valley and is accessible from Kita-zawa Pass. Mt. Kita (3,193 m, Japan's second-highest peak) faces Hōō across the river and starts from Hirogawara, the same valley system. Hōō Sanzan works as the natural 'gateway peak' of the Southern Alps: easier than the higher peaks, with a distinctive white-sand and Obelisk landscape that exists nowhere else in the range, and a view that makes the rest of the Southern Alps geography legible the next time you're back.
