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• 18:04, 23 January 2026 Vigen talk contribs created page Underground works (Created page with "Below the surface, CERN has the following '''underground works''': * '''460''' underground structures including '''57''' shafts * '''188''' service galleries of total length '''17.1 km''' * About '''65 km''' of tunnel For more information see [https://apex-sso.cern.ch/pls/htmldb_gisdbr/f?p=112:8:17550593577253: https://apex-sso.cern.ch/pls/htmldb_gisdbr/f?p=112:8:17550593577253:]. Category:CERN sites Category:Fun facts and anecdotes") Tag: Visual edit