twnnel

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  Tunnel Portal and Tunnel, Llanllyfni

  Type Item

  Uploaded by WiciPics
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  Era Quarry, Ceinws / Esgairgeiliog

  Type Item

  Uploaded by ceinwsarchive
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  In the open chamber at Rhiwgreiddyn slate quarry

  Type Item

  Uploaded by ceinwsarchive
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  Experimental round tunnel

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  Uploaded by ceinwsarchive
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  Tunnel at Esgairfoeleirin quarry

  Type Item

  Uploaded by ceinwsarchive
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  Entrance to a lower level tunnel at Esgairfoeleirin larger quarry

  Type Item

  Uploaded by ceinwsarchive