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Arches National Park was officially named when President Herbert Hoover signed legislation on April 12, 1929, creating Arches National Monument. The US Congress officially changed the status of Arches National Monument to Arches National Park on November 12, 1971.

The origin of the name "Arches" comes from the more than 2,000 natural sandstone arches preserved in the park.

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9y ago

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