| 11. | They are carved below ground level and ringed with trenches and courtyards.
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| 12. | All but six of the line's 22 stations are located below ground.
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| 13. | Extending below ground level, the churches are ringed with trenches and courtyards.
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| 14. | The magazines were located below ground in the basement of the fort.
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| 15. | The lower floor often has lower ceilings and is partially below ground.
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| 16. | It would allow Air Force pilots to explode bombs well below ground.
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| 17. | Our first stop was Skara Brae, an ancient village built below ground.
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| 18. | No chemical weapons factory exists in Libya whether above ground or below ground.
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| 19. | But common sepulchres usually were built below ground, and called hypogea.
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| 20. | Late Friday, methane caught fire 80 meters ( yards ) below ground level.
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