Before the Northfield Tunnel was opened in 1891, the O&W had a switchback line. It had 1 switchback at Northfield and two switchbacks at Merrickville.

This is the switchback line near the north portal. Water has flooded the grade. Trains would be headed to Northfield through here.

Photographed by Chris Bigham, March 27, 2026.
Added to the photo archive by Chris Bigham, April 3, 2026.
Railroad: New York Ontario and Western.

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