click photo for full-size image
photo by Donald Kinney
Wikipedia says: A stack or seastack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology. They are formed when part of a headland is eroded by hydraulic action, which is the force of the sea or water crashing against the rock. The force of the water weakens cracks in the headland, causing them to later collapse, forming arches, free-standing stacks, and even small islands.
click photo for full-size image
photo by Donald Kinney
Not quite sure what to look up in the Wikipedia about this one. Often I find that it is best just to absorb beauty, and not try to figure it out or explain.
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