母岩 (ぼがん) — base rock; country rock; gangue; host rock; mother rock; parent rock; wall rock
母岩
ぼ が ん
Base rock; country rock; gangue; host rock; mother rock; parent rock; wall rock
画像検索
母岩 (ぼがん) — base rock; country rock; gangue; host rock; mother rock; parent rock; wall rock