Before revision: River Orchy, Scotland, showing erosion potholes in bedrock The hiidenkirnu pothole in Askola, Finland In Earth science, a pothole is a smooth, bowl-shaped or cylindrical hollow, generally deeper than wide, found carved into the rocky bed of a watercourse.
After revision: 300px|River Orchy, Scotland, showing erosion potholes in bedrock The hiidenkirnu pothole in Askola, Finland In Earth science, a pothole is a smooth, bowl-shaped or cylindrical hollow, generally deeper than wide, found carved into the rocky bed of a watercourse.