if i had more info on what surronded that area it might be alittle easier to make a hypothesis on what it was, becaude right now i have no idea what
it was, so i have to conclude it's an error as of now.
The most logical conclusion is image error. 50 km long and 1 km wide? And no one has come across it? A very large portion of the Canadian
population is in Ontario, I find it impossible to believe no one would have come across it, especially planes flying over it. The strip fades at the
ends too, another indication its an image error.