Explain what corries, arêtes and pyramidal peaks are, their features and how they are formed.
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It is formed when two neighbouring corries run back to back. ... A pyramidal peak is formed where three or more corries and arêtes meet. Glaciers erode backwards towards each other, carving out the rocks by plucking and abrasion. Freeze thaw weathers the top of the mountain, creating a sharply pointed summit .
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