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File:CPRR Summit Tunnel Central Shaft.jpg


The vertical central shaft of the CPRR "Summit Tunnel" (Tunnel #6) at Donner Summit which allowed drilling and excavation of the tunnel to be carried out on four faces at once during construction of the 1,659 foot tunnel over a period of 15 months in 1866-67.

Original digital photograph taken by the uploader ( Centpacrr) inside the Summit Tunnel in August, 2003.


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