Nah, Mark, It looks like my track: All I can say is: if you got a long enough stretch of track to shoot it with a long telephoto, then you'll get squigglies.
You are probably correct. The photo was taken in 1969 on a branch of the Canadian National that ran north of Groveton, New Hampshire up to Beecher Falls, Vermont. </font>[/QUOTE]Colebrook NH was on the MEC beecher falls branch, that ran from north stratford up to BF, they had trackage rights over the GT from Groveton to NS.
I agree with the posters who said that the device was a detector. You will also find these hooked up with derails. As far as the alleged abandoned branch, I just want to comment that the curve is super-elevated which would indicate that trains used that track at other than slow speeds. CT
As I look at the shot it does appear to be super-elevated but it may just be the way the photo is rotated. When I took the photo, I lined it up with the horizon more or less. However the hills on the left may be higher and/or closer causing the horizon to descend from left to right. In that case the track would be more level.