A truncated spur is a geographical feature found in river valleys and glaciated landscapes. When a river or glacier flows through a valley, it can cut across and erode the lower parts of interlocking spurs (fingers of land sticking out from the sides of the valley, formed by the erosion of meandering rivers), creating a steep cliff-like or truncated edge. In geography, understanding truncated spurs helps explain how landscapes are shaped by natural forces like rivers and glaciers over time.
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