Idea | 8B+ Boulder problem at Horai

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Japan / Aichi

Also known as イデア.

Contributors

Jari Gerritsen

31 contributions since 4th December 2025.

TdG

4 contributions since 28th March 2026.

tvhc_tvhc

3 contributions since 13th March 2026.

Pics + Vids

No pics or vids yet.

Ascents

3 successful ascent s recorded.

	Climber	Style	Ascent Date	Suggested Grade
	Dai Koyamada	Boulder \| worked	8th Feb 2010	8C
	First ascent.
	References [1] https://www.thecrag.com/en/climbing/japan/horai/route/3343623819 [2] http://koyamada.dai.hiho.jp/?eid=822583
	Masanobu Suzuki	Boulder \| worked	Before 25th Mar 2022	8B+/8C
	Fourth ascent.
	References [1] https://www.instagram.com/p/CbjA9laPY-1/?img_index=2
	Yuta Imaizumi	Boulder \| worked	2nd Dec 2025	8B (soft)
	References [1] https://www.youtube.com/watch?v=NPU9FGWfYPY [2] https://www.instagram.com/p/DRyN_3XkqLW/?img_index=2