This is the “Matterhorn rock,” only 60cm tall.
Shibasaki Rock is a small limestone crag located in Oku-chichibu area in Saitama Prefecture. If you come from Tokyo, take Kan’etsu Expressway and get off at Hanazono off-ramp, and take Minano-Yorii bypass (toll road) and find Prefectural Road #37. Stay on #37 till Man’nen Bashi and turn right. Next landmark is Yoshida Public Hall (community center), unfortunately the signage is written in Japanese, and make a sharp right turn into a narrow road. Drive 15 minutes or so, and you see a rock which looks like a miniature Matterhorn (ha ha ha!) on your right, that is where the access trail starts leading to Shibasaki Rock (5 minute- walk). You can drive down a little further and park your car on the shoulder (parallel parking). On-sight is difficult. Find somebody who has been there. Good Luck!
At the end of August, we went to Shibasaki Rock for one day of freeclimbing. It was a group of 10 people (2 climbing instructors and 8 climbers). There are about 20 route, and they are vertical/slightly overhang/overhang.
You can find the topo here. http://cliff.world.coocan.jp/schedule/shibasaki/topo.htm
Well, the easiest route in this area is slightly overhang.
Umaizo Ginnan (Gingko Nuts are tasty) 5.8
Other routes I climbed (top roping) are:
Entotsu (chimney) 5.9
Superclip 5.10c –many tensions
Warming Hook 5.10a
Urushigi (lacquer tree) 5.11a –pulled on gear at the crux
Mizo 1 (groove) 5.9
Shoshinsha Mark (Beginner Mark) 5.9 –pulled on gear at the start
By the way, Urushigi is a three-star route. Please give it a try when you are in this area.