Mining tramway? Cornwall??
Not Taunton, though.

Correct, in that it is not Taunton

My wild guess is somewhere on the old Wenford Bridge line in Cornwall
No, not in Cornwall - slightly nearer Taunton, but still to the south of that small town

Looks like a wider gauge.
The lovely little dog in the foreground is useful in giving some scale, I agree - but I'm still struggling.

I thought it a wider gauge to start with, but can assure you it is standard gauge. And little Lucy is pure Westie

If it helps.... although the track is perfectly preserved, it last saw rail traffic in 1967.
The view in the other direction.....
