Before revision: River Orchy, Scotland, showing erosion potholes in bedrock The Earth scientists, who study rivers and streams, define a pothole as a smooth, bowl-shaped or cylindrical hollow, generally deeper than wide, found carved into the rocky bed of a watercourse.
After revision: River Orchy, Scotland, showing erosion potholes in bedrock A pothole is defined as a smooth, bowl-shaped or cylindrical hollow, generally deeper than wide, found carved into the rocky bed of a watercourse.