As a bus decided to park in front of where I'd been filming, I took the opportunity to head a mile west out to Burd's Crossing on the outskirts of Derry. The crossing sits right at MP 308. About ten minutes passed before 21J called clear at 307 and came around the curve where the DR Interlocking Tower once stood.
7648 ES40DC
8328 Dash 8-40CW
9744 Dash 9-40CW