keyhole(かぎ穴) air hole(空気穴) peep hole(のぞき穴) windhole(風穴) Tunnel caves(横穴) secret passage(抜け穴) knothole(節穴) grave(墓穴) pitfall(落とし穴) cave(洞穴) keyholeかぎ穴/air hole空気穴/peep holeのぞき穴/windhole風穴/Tunnel caves横穴/secret passage抜け穴/knothole節穴/grave墓穴/pitfall落とし穴/cave洞穴 ← top