= Stack (geology)
{wiki=Stack_(geology)}
In geology, the term "stack" typically refers to a vertical column or pillar of rock that has been isolated from the surrounding landscape, usually as a result of erosion. Stacks are commonly found in coastal areas where ocean waves have eroded softer rock away, leaving behind more resistant rock formations that stand tall above the surrounding terrain. One of the most famous examples of a geological stack is the "Lands End" in Cornwall, England, where numerous sea stacks can be observed along the coastline.
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