The 911-foot Brush Tunnel carries both GAP travelers and Western Maryland Scenic Railroad tourist trains through a ridge in the Allegheny Mountains. While the GAP and the active tracks run parallel to one another, it’s best to pause while trains are passing through, since they can be noisy and emit fumes.
The Brush Tunnel was constructed in 1911 by the Western Maryland Railway as part of its expansion from Cumberland to Connellsville. The walls of the double-track tunnel are constructed of cement and at either end is a rectangular cement portal with an arched opening and a corbeled edge.
The nearest trailhead and parking are at Cash Valley Road. The closest trail town is Cumberland.