| 21. | This tribe abandoned their nomadic ways and settled the surrounding caverns.
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| 22. | Jacobs Cavern was peculiarly rich in flint knives and projectile points.
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| 23. | The Vaults of Zin is a huge cavern in the underworld.
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| 24. | The cavern of Saint Thomas is the place of a legend.
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| 25. | The URB continues to operate the caverns as a show cave.
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| 26. | The two finally reach the old hangout which is a cavern.
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| 27. | :On Grottoes'southwestern outskirts is Grand Caverns Regional Park.
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| 28. | There is no artificial lighting in this part of the cavern.
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| 29. | Various colonies of bats roost within the [ cavern system ].
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| 30. | The main hall cavern has is wide, long and high.
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