Nexus | 8C+ Boulder problem at Shiobara

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Japan / Tochigi

Quick Info

Grade	8C+
Type	Boulder problem
Crag	Shiobara
Country	Japan 🇯🇵
Rock type	Limestone
History
First ascent	Ryuichi Murai (23rd Oct 2021)
Recorded repeats	3

Quick Info

Grade	8C+
Type	Boulder problem
Crag	Shiobara
Country	Japan 🇯🇵
Rock type	Limestone
History
First ascent	Ryuichi Murai (23rd Oct 2021)
Recorded repeats	3

Also known as UMA Extension Project. See also UMA.

Contributors

remus

39 contributions since 24th October 2021.

Jari Gerritsen

7 contributions since 26th September 2026.

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Ascents

4 successful ascents recorded.

	Climber	Style	Ascent Date	Suggested Grade
	Ryuichi Murai	Boulder \| worked	23rd Oct 2021
	First ascent.
	A 5 year project! References [1] https://www.instagram.com/p/CVaVwCCJpy5/ [2] https://www.youtube.com/watch?v=3cWfUmapmb0
	Keiichiro Korenaga	Boulder \| worked	Apr 2024
	Second ascent.
	References [1] https://www.instagram.com/p/C5-y0s3SaeC/ [2] https://www.instagram.com/p/C6Bg1exSg34/
	Ritsu Kayotani	Boulder \| worked	May 2025
	References [1] https://www.instagram.com/p/DJrFjuhvKHb/
	Yuta Imaizumi	Boulder \| worked	Before 26th Sep 2026
	References [1] https://www.instagram.com/p/DdvGq01yGm1/ [2] https://www.youtube.com/watch?v=-bF_IFnMs5s