The Southern Yatsugatake Volcanic Group is part of the Yatsugatake Mountains. The southern group is defined as the mountains south of the Natsuzawa Pass. The highest peak of the mountains is Mount Aka and the elevation is 2,899 metres.
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^Hunt, Paul (1988). "14. Yatsu-ga-take". Hiking in Japan: An Adventurer's Guide to the Mountain Trails (First Edition ed.). Tokyo: Kondansha International. pp. 111–115. ISBN0-87011-893-5.CS1 maint: Extra text (link)