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System Region Depth Cave Cavern OW Last Report Remarks
    Chert Mine Bakewell Derbyshire True False False 1/13/2011
    Dan-Yr-Ogof (Resurgence) South Wales True False False 3/16/2010
    Dinas Silica Mines Wales True False False
    Hodge Close Lake District True False False 4/5/2012
    Tucks Rift South Wales True False False 8/12/2014