= Natural arch
{wiki=Natural_arch}
A natural arch, also known as a natural bridge, is a geological formation where a rock formation has been eroded in such a way that a portion of it remains intact, creating an opening that resembles an arch. These structures are typically formed through the processes of erosion and weathering, primarily by the actions of water, wind, and ice over long periods of time. Natural arches are often found in sedimentary rock formations and can vary greatly in size and shape.
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