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A moulin pothole, also known as a glacial mill, is a deep, cylindrical hole scoured into bedrock by the action of falling meltwater within a glacier. This water, carrying rocks and boulders, creates a powerful abrasive force. While similar in formation to fluvial potholes, moulin potholes are distinct due to their location, often found on hilltops or steep slopes, rather than in stream alignments. Evidence of these formations can be found after glaciers recede.1

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