Biratori, Hidaka region, Hokkaidō

小平

こびら Kobira

Kuopira and Hayopira are the pair of cliffs that face each other at the Biratori bridge and give Biratori its name; the settlement of Kobira takes its name from the eastern one.

Ainu spellings: Ku-o-pira

Analyses

ku-o-pira

クオピラ

proposed

cliff where set bows are

ku set bow, spring trap
o have
pira cliff

Proponent: zenibako_trek（小樽銭函地名歴史研究会） (zenibako_trek (Otaru Zenibako Place-Name and History Society))

Kuopira is one of the two cliffs that give Biratori its name, pira-utur 'between the cliffs'; the settlement name comes from the cliff.

Sources

日高地方の地名の由来
zenibako_trek·2025-05-20