| 11. | There are several natural arches on its rocky coast, as well as challenging rock climbs.
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| 12. | The natural arch is large enough for a sailboat to cross underneath it with ease.
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| 13. | It includes a natural arch through which seawater passes.
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| 14. | There are many natural arches and sandstone cliffs that are excellent for rock climbing and rappeling.
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| 15. | A natural arch in Monument Valley, Arizona, was named " Swinnerton Arch " in his honor.
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| 16. | It is probably the world's tallest natural arch.
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| 17. | "' Es Pont�s "'is a natural arch in the southeastern part of the island of Mallorca.
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| 18. | Below these high walls are natural arches and rock shelters used by Native Americans and early settlers.
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| 19. | It is known for its distinctive natural arch, which at approximately tall is the tallest in Hawaii.
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| 20. | Hag's head also features a natural arch.
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