U shaped valley

• Former interlocking spurs may be cut off by the glacier as it flows downhill, leaving truncated spurs and steep valley sides.
• The width and shape of the resulting glacial trough will depend on the nature of the rock type and the intensity and weight of the glacial and its erosion.
• An example of a glacial valley is Glencoe.
• The valley becomes wider and straighter, often with a misfit stream which no longer fits the valley floor.