Talk:Henryton Tunnel

External links modified
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 * Added archive https://web.archive.org/web/20060526105551/http://www.dnr.state.md.us/publiclands/central/patapscovalley.html to http://www.dnr.state.md.us/publiclands/central/patapscovalley.html

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Cheers.— InternetArchiveBot  (Report bug) 06:50, 1 April 2017 (UTC)

third-oldest tunnel in the world
third-oldest tunnel in the world that remains in active railroad use? This cant be right I can name at least three tunnels on the main line past my that was built in 1840. 95.151.127.112 (talk) 18:01, 15 March 2018 (UTC)