Biked the Great Allegheny Passage from Rockwood, PA to the Pinkerton Tunnel, near Fort Hill. (The standard action shot.)
“Pinkerton 1911” engraved above the tunnel.
Inside the tunnel itself. They’re raising funds to open it. Right now it’s closed with a path to get around that extends over a mile. Every dollar donated will be matched with an additional $17. Donate online: atatrail.org/pinkerton