INSTITUTED 1852
TRANSACTIONS
Paper No. 1154
THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD.
THE BERGEN HILL TUNNELS.[1]
By F. Lavis, M. Am. Soc. C. E.
[Location.]—That section of the Pennsylvania Railroad’s New York Tunnels lying west of the Hudson River is designated Section “K,” and the tunnels are generally spoken of as the Bergen Hill Tunnels. Bergen Hill is a trap dike (diabase) forming the lower extension of the Hudson River Palisades.