| 21. | In former years, visitors could explore the grotto by boat.
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| 22. | The tour concludes with a boat ride through the Glowworm Grotto.
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| 23. | This originated the custom of carrying lighted candles to the grotto.
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| 24. | The bishop determined that Peyramale should remain away from the grotto.
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| 25. | It was used by a Masonic lodge as the Avalon Grotto.
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| 26. | The first grotto in France was built at Fontainbleau in 1541.
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| 27. | The pond divides the grotto into the east and west sections.
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| 28. | During the winter, grotto members avoid caves with hibernating bats.
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| 29. | Artists Grotto there is believed to have been named for Hall.
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| 30. | It is described as a " modern-day grotto ".
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