Japan’s Hidden Ravine ＆ Forest Walk Along the Tama River
Why This Trail Is Special?
Just two hours from central Tokyo, the Ohtama Walking Trail is the perfect escape into Japan’s deep nature. Instead of crowded temples, you get moss-covered forest paths, dramatic rock formations, and the soothing sound of the Tama River flowing beside you the whole way.
The undisputed star of the route is Hatonosu Gorge (鳩ノ巣渓谷) — a narrow, dramatic ravine where sheer rock walls crowd the river, and the water carves through ancient stone. It’s one of the most photographed spots in Okutama, and for good reason.
Trail Overview (At a Glance)
| Item | Details |
| Route | Okutama Station → Shiromaru → Hatonosu Gorge → Kori Station |
| Distance | Approx. 8.2 km (5 mi) |
| Duration | 3–3.5 hours (add time for photos & rest stops) |
| Difficulty | Easy to Moderate — suitable for beginners |
| Elevation gain | Approx. 300 m (1,000 ft) |
| Best season | April–November (autumn foliage peaks late Oct–mid Nov) |
| Trail type | Point-to-point trail along the Tama River |
The Trail, Step by Step (Okutama Station → Kori Station)
Start: Okutama Station (奥多摩駅)
Leave the station and follow the riverside path heading downstream toward Hatonosu.
- Hikawa Gorge (氷川渓谷)
It’s very close to Okutama Station—about a 6-minute walk.
If you walk through Okuhikawa Shrine (奥氷川神社) and head down toward the river, you’ll find a suspension bridge.
- Moegi Bridge (もえぎ橋)
A 10-minute walk from Okutama Station.
When you see the “もえぎの湯” sign from the road, turn left. You can enjoy views of the valley from the suspension bridge.
- Shiromaru Dam (白丸ダム)
A mysterious, quiet dam with a distinctive stepped structure. A great short rest point with mountain scenery.
- Hatonosu Ravine (鳩ノ巣渓谷) — THE highlight
Massive rocks crowd the riverbed and the gorge narrows dramatically. Walk the Hatonosu suspension bridge for a panoramic view of the ravine and its turquoise-green water. This is your photo stop — give it time.
- Upper Falls and Lower Falls (上の滝・下の滝)
Beyond the Hotaru Bridge (ホタル橋) spanning the stream, there is a small bridge; the Upper Falls are located above it, and the Lower Falls are below it. This refreshing area is perfect for recharging.
Finish: Kori Station (古里駅)
Before arriving at the station, houses come into view, and the road gradually opens up to reveal a valley landscape.
How to Get There (From central Tokyo)
- From Shinjuku: Take the JR Chuo Line to Tachikawa or Ome, then change to the JR Ome Line heading for Okutama. Total less than 2 hours.
- Get off at Okutama Station to begin.
- To return: From Kori Station, take the JR Ome Line back toward Tokyo.
- Pro tip: The train line runs parallel to the trail. If you’re tired partway, you can hop off at Hatonosu Station or Shiromaru Station instead of finishing the full route.
What to Bring
| Item | Why |
| Hiking shoes or sturdy sneakers | The path mixes pavement, forest trail, and slippery rocky area |
| Water (1L+) & snacks | Few shops once you leave the stations |
| Layers + rain jacket | Mountain weather changes fast, even in summer |
| Cash (small bills) | Some small shops don’t take cards |
| Camera | There are lots of photo-worthy spots |
| Bear bell or noise | For your safety, please make some noise while walking in the mountains |
Safety & Etiquette
- Mountain weather changes quickly — check the forecast and start early (before 10:00 is ideal).
- Wildlife: Wild animals live in the area. Stay on the path and make noise.
- Don’t litter — carry everything out with you.
- Keep noise down — locals and other hikers value the quiet of the forest.
FAQ
Do I need to speak Japanese?
No. The trail is clearly signposted, and the stations have English signs. Having both English and Japanese names written down helps.
There is an information center in front of Okutama Station. You can pick up a map of the “Ohtama Walking Trail” in English (see the PDF below) there.
Is it safe for children?
Yes, for older kids. The trail is easy to moderate, but please watch your children carefully near the water’s edge.
Can I do it in half a day?
Yes. Start by 9:00, and you’ll finish at Kori by early afternoon with time to spare.
Is there a place where we can have lunch?
If you’re bringing a packed lunch, there’s a gazebo and outdoor tables just past Shiromaru Dam.
Along the trail, you’ll find a restaurant called Earth Garden.
Watch the Trail First
See the moss, the ravine, and the turquoise water in motion — watch the full Ohtama Walking Trail video on our YouTube channel, then go walk it yourself!
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