|Literal English||Ice Block Cave|
|Country||Land of Arctic Fang|
Hyōkaidō (氷塊洞, Literally meaning: Ice Block Cave) is one of the big six unexplored sage regions, a legendary place that is equally famous as the others, Black Dragon Cove, Majonomori Forest, Bewitching Silk Forest and Silk Forest of Submission. It is the residence of the arctic foxes — including the sacred Nine-Tailed Sage that resides in the cave and currently rules the entirety of the Arctic Foxes— and is also where Kyouto trained here to achieve Sage Mode, though only the latter was successful in this endeavor. Unlike the other sages, the foxes of Hyoukai Cave seem to have more affiliations across the globe showing they are a universal species, despite at least four of their summoners originating from the Kirigakure. Also, three of their foxes seemed to show great intelligence that earned them a seat in the Village Council.