Mid-Canada Line Site 12

This is a spot which has been on my list of places to explore for the last year or so. It’s an abandoned test facility for the Mid-Canada Line, a cold war era line of radar stations used for detecting aircraft. Notably aircraft flying towards North America over the Arctic. The Ottawa Valley had 4 sites set up to test the technology out. The Cliff Notes version is this: transmissions between each station in the line would be interfered with by any aircraft passing between them, thereby acting as a trip-wire of sorts to alert the military to the presence of an aircraft.

MCL Site 12 Top of Tower
Main Doppler dish on top of the tower.

The tower does have some tilt to it, but all of the guy wires are still attached. This thing was built to withstand 120 mph winds when fully kitted out, also while covered in 2 inches of ice. Should be up for a little while longer. According to the UAV, the top of the tower sits around 40m AGL.

MCL Site 12 Tower Overhead
Oblique view of the antenna arrangement. Top is the Doppler dish, middle 2 antennas are for receiving, and the lower antenna is a microwave dish.

Only the skeleton of the equipment building remains. Most of the sheet metal siding seems to be intact, just no longer attached to the building frame, and can be seen in the second image laying on the ground around the buildings foundation.

Flight 012 Mid-Canada Line Site 12 Test Fence
The view from 120 meters up. You can play “Where’s Maltose” with this shot.

This location does see quite a bit of foot traffic with all the footprints and vehicle tracks that were there on the morning I went. It was definitely worth the visit. I look forward to returning later in the year to get some updated shots during the warmer months.

Leave a comment