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Tarn (lake)
Mountain lake or pool in a glacial cirque
"Tarns" redirects here. For the hamlet in England, see Tarns, Cumbria.
Glacial action forming a cirque which may host a tarn
A tarn (or corrie loch) is a mountain lake, pond or pool, formed in a cirque (or "corrie") excavated by a glacier. A moraine may form a natural dam below a tarn.[1]