Like always great interpretation @velimir.. I can say one thing that definitely the darkness never represent the limitation of our rational mind, if so at some point it will never kisses the sky. In my point of view the it represents our limitations because when the darkness going to cross or touch the sky the sun stop that darkness over there.. here is our limit and here the almighty will come.. In the beginning u mention the cemetery that suits here that one day even we reached the sky, the last destination should be that.. thanks for sharing.. expecting more..