Categories Tours, Trails & Group Rides A Tunnel Post author By The Brompton Diarist Post date December 19, 2012 Eastern Pennsylvania is littered with opportunities to admire rock and shale; it’s one of the real beauties of the area. This is a tunnel in Fairmont Park, in Philadelphia, on a day that was neither snowy, nor icy, nor particularly cold. ← Cornering on the Bridge → Reflective Sidewalls