OK I know I seem to be going for a prize for the most random post in a car forum. Also if you don't think I am mad already, I know you likely will soon. This picture was taken by a guy local to me from a drone. I've never seen these before and would be interested to know if it is fake and what it means, it looks like it should mean something. Does anyone know anything about these or how to work out what they mean? I hope the picture comes up OK, first time I have done this; https://www.pinterest.co.uk/pin/781726447806996986/visual-search/