The northern terminus of the Allegheny Trail sits right at the Mason-Dixon Line, directly in front of the Columbia Gas Transmission Station. There is ample parking available, with an informational kiosk marking the 0.0 mile point of the Allegheny Trail, which stretches for 311 miles through the Allegheny Mountains into dense forests, rolling ridgelines, and remote wilderness. If you want to see the Mason-Dixon Memorial, it is situated just behind the compressor station, and sets the stage for an immersive Appalachian adventure with significant historical importance.