There's quite a few mentions of Mitake (nr Tokyo, Japan) on the web, but nothing too specific. If you ever find yourself in Tokyo, needing to get out for the day, hope this will help.
Mitake is about 90 minutes on the chuo-line train due west from Shinjuku - the massive insane station on the west side of Tokyo. The guys at the
climbing wall had told me I could rent a pad from the convenience store in Mitake just over the bridge from the station. The store was pretty empty, a few sad packets of biscuits and some beer in the fridge - but strangely did have some bouldering pads. A few shouts of 'sumimasen' and a guy popped in from next door. I got a large fat newish metolius pad for the day. £4 (1000 yen). The guy didn't even want a deposit.
The river is beautiful: fast flowing clear blue-green water. Admittedly, quite a lot of ramblers and fishermen but a gloriously long way from the daily insanity of Tokyo. Some guys were warming up on the first set of blocs, nods were exchanged and I wandered over to have a go.
The bouldering is pretty small scale - I'd say five spots along the river that are ok, each with one or maybe two decent blocs. The in-between problems look like nothing more than fillers, some on pretty damn small boulders. It takes only 15 mins or so to walk end to end, all the problems shown in the guide. They are spread about equally up and down stream of the bridge, on both sides of the river but there are several convenient bridges to cross over. The polish is rivalled only by the likes of minus ten: river-worn granite (I think - my appreciation of geology is appalling) plus a lot of traffic. However, given the small number of blocs, there's a cool variety of styles, desperate near-frictionless rounded grovelling and pedalling up little slabs, and some steeper crimpy body tension problems. The area's centre piece is the (v. rough translation) "ninja can't climb" bloc which is a respectable size and kicks off at about Font7a. If only there had been enough mats I would have jumped on to show up the locals (see photo)!
All in all, a great escape from the city. The blocs are in a beautiful setting; sitting by the river is already worth the day trip. Although it was fairly busy on a sunny saturday, the locals were really friendly, very encouraging and amused both by my attempts to climb and to speak japanese; I displayed about equal ability in each discipline... It is by no means a world class venue, but cheap and easy to get to from Tokyo, and a nice change from the gym.
rc
Cost about £4 each way on the train from Shinkuku to Mitake direct (through Kokubinji where the bouldering gym is and then through Ome). About 90 mins if you get the limited stop express train. Walk from Mitake station to the boulders is 5mins.
Map showing the station and the riverGuide from the climbing gyms in Tokyo - covers mitake and ogawayama. It is in japanese but lets you find the blocs and the grades.
Train info from/to Tokyo The shop in Mitake (get google to translate the webpage). Go out the station, straight over the bridge and it is the very first shop on the right.
Other stuff to see in Mitake Ninja Cant Climb bloc