| Grade | 8C |
| Type | Boulder problem |
| Crag | Horai |
| Country | Japan 🇯🇵 |
| Rock type | Volcanic Tuff |
| History | |
| First ascent | Dai Koyamada (11th Nov 2003) |
| Recorded repeats | 7 |
| Grade | 8C |
| Type | Boulder problem |
| Crag | Horai |
| Country | Japan 🇯🇵 |
| Rock type | Volcanic Tuff |
| History | |
| First ascent | Dai Koyamada (11th Nov 2003) |
| Recorded repeats | 7 |
Iwagoya Boulder, Horai, Aichi, Japan
8 successful ascents recorded.
| Climber | Style | Ascent Date | Suggested Grade | |
|---|---|---|---|---|
| Dai Koyamada | Boulder | worked | 11th Nov 2003 | 8C | |
| First ascent. | ||||
| Motochika Nagao | Boulder | worked | Before 11th Feb 2015 | ||
| Second ascent. | ||||
| Ryuichi Murai | Boulder | worked | 7th Apr 2019 | ||
| Third ascent. | ||||
References |
||||
| Mishika Ishii | Boulder | worked | 3rd May 2019 | ||
| Fourth ascent. | ||||
|
Done at just 13 years old! References[1] https://www.8a.nu/news/byaku-dou-8c-by-mishka-ishi-13-48731 |
||||
| Kazuma Ise | Boulder | worked | 4th Feb 2020 | 8C | |
References |
||||
| Shinichiro Nomura | Boulder | worked | 20th Mar 2020 | ||
References |
||||
| Yuta Imaizumi | Boulder | worked | 23rd Mar 2025 | ||
| Jun Shibanuma | Boulder | worked | |||