Dropping down. CN's Massena Spur currently extends from MP 84 in Brossard, Qc on Montreal's South shore (where it joins the Rouses Point Sub) to MP 77.3. It currently terminates just short of CP's Adirondack sub (it used to cross it near CP's Delson station), but this line was once the Massena sub and extended all the way to Massena, NY. There are some industrial clients remaining on the line, and here CN 527 (which normally is a transfer from Southwark Yard to Taschereau yard in the Montreal area) was called to head down the Massena spur to serve some clients on this rarely photographed line. Here CN 7028 is doing some switching on the spur towards Brasseur Transport.
