Ogawayama
Also known as: 小川山, Ogawayama
Alpine granite valley; forest; Kimpu-san views; premier Japanese trad area
The climbing
What there is to climb at Ogawayama, and whether a mixed-ability group can split up here.
theCrag 365 routes; 700+ incl guidebooks (multi-sector). Confirm.
Selection 5.8 130m (classic multipitch); Ogawayama LayBack 5.9; Long Long Ogawayama 5.11a; Kagemusya 5.12d; slab friction testpieces
Beginner slabs + hard cracks + sport + boulders + Selection multipitch; wide spread across sectors I-VII
Drive to campsite; kid/dog-friendly; broad grade range; good for mixed groups
Rock & setting
Fine granite; slabby friction; generally solid
Granite slabs (friction); cracks; some faces/roofs; single + multipitch; mostly slab-to-vertical
All aspects across sectors; sun or shade available most of day
Popular; busy weekends + high season; solitude midweek/off-sectors. Confirm.
Season & conditions
Camp open mid Apr-mid Nov; best Jul-mid Oct; cold mid Oct-May; avoid tsuyu Jun. Confirm.
Jul-mid Oct (high-altitude cool); shoulder May-Jun, Oct
Autumn foliage; short alpine high season; Golden Week + autumn peaks
Cold snaps at ~1600m; tsuyu rain Jun; afternoon storms summer; slab needs dry rock. Confirm.
Approach & gear
Campsite day-use/parking approx 500 yen/person; camping fee; within Chichibu-Tama-Kai NP. Confirm.
Permits and operators change - confirm before booking.
Drive to Mawarime-daira campsite (parking approx 35.909093,138.640461); sectors 5-30 min, some river crossings
Car recommended; hub Kawakami village; approx 3 hr from Tokyo; Shinano-Kawakami stn + taxi. Confirm.
Trad rack (cams+nuts) for cracks; draws for sport; friction shoes; pads for boulders; 60-70m rope; mobile patchy in valley. Confirm.
Mawarime-daira campground (huts, rental rooms, lunch, laundry, toilets, water, BBQ)
Campground toilets, drinking water, shop/lunch, laundry, BBQ, shelters
Bolting & safety
Mix bolts + trad; approx 65% bolted; granite anchors; generally maintained. Confirm.
Slab-friction falls; cold at altitude; bears (tsukinowaguma); river crossings; dry-rock dependent
None required; JMGA guides available for trad/multipitch
Police 110; fire/ambulance 119; mountain rescue via police; limited signal in valley
This profile is desk research, compiled from public sources - not a first-hand crag report. Coordinates are approximate.